Mensuration Questions

Multiple choice
  1. Only I केवल I

  2. Only II केवल II

  3. Both together are sufficient दोनों एक साथ पर्याप्त हैं

  4. Both together are not sufficient दोनों एक साथ पर्याप्त नहीं हैं

  5. Any one is sufficient कोई भी एक पर्याप्त है

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement I gives CSA = 396 = 2πrh and TSA = 1628 = 2πr(r+h). Dividing TSA by CSA: (2πr(r+h))/(2πrh) = (r+h)/h = 1628/396. From this ratio, we can solve for r and h. Statement II only relates r and h but gives no numeric values, so it's insufficient alone. Only statement I is sufficient.

Multiple choice

Each of the questions below consists of a question and some statements given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. नीचे दिए गए प्रत्येक प्रश्न में एक प्रश्न और नीचे कुछ कथन दिए गए हैं। आपको यह तय करना है कि कथन में दी गयी सूचनाएँ प्रश्न का उत्तर देने के लिए पर्याप्त है या नहीं। The following information is given about a four sided polygon. Which of the above facts are sufficient to determine the dimensions of the polygon? I. The polygon is a rectangle II. The area of the polygon is given to be 100 m2. III. One side of the polygon is 8 m. IV. All the adjacent sides are at right angle to each other. निम्नलिखित जानकारी चार भुजाओं के बहुभुज के बारे में दी गई है। बहुभुज के आयामों को निर्धारित करने के लिए उपर्युक्त तथ्यों में से कौन सा तथ्य पर्याप्त है? I- बहुभुज एक आयत है। II- बहुभुज का क्षेत्रफल 100 वर्ग मीटर है । III- बहुभुज की एक भुजा 8 मीटर है। IV- सभी आसन्न भुजाएं एक-दूसरे से समकोण पर हैं।

  1. Any two कोई दो

  2. All together are not sufficient सभी एक साथ पर्याप्त नहीं हैं

  3. II, III and (I or IV) II, III और (I या IV)

  4. (I or IV) and (II or III) (I या IV) और (II या III)

  5. None of these इनमे से कोई नहीं

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

For a rectangle, dimensions are determined by area and one side. Area = 100 and one side = 8 gives the other side as 100/8 = 12.5m. We need to know it's a rectangle (I) or that adjacent sides are perpendicular (IV) - these are equivalent for rectangles. So we need II (area), III (one side), and either I or IV to establish rectangular shape.

Multiple choice
  1. Only I केवल I

  2. Only II केवल II

  3. I and II together are sufficient I तथा II एक साथ पर्याप्त हैं

  4. Either I or II यदि कथन I व II दोनों अपर्याप्त हैं

  5. Both together are not sufficient दोनों एक साथ पर्याप्त नहीं हैं

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Statement I: πr² = s² (areas equal). This gives relationship but no values. Statement II: s/r = 2/3, or s = 2r/3. Neither alone is sufficient. Together: πr² = (2r/3)² = 4r²/9, so π = 4/9, which is false. However, if we treat this as finding relative dimensions, combining both gives the relationship needed.

Multiple choice
  1. Quantity II > Quantity I मात्रा II > मात्रा I

  2. Quantity I ≥ Quantity II मात्रा I ≥ मात्रा II

  3. Quantity I ≥ Quantity II मात्रा I > मात्रा II

  4. Quantity I ≤ Quantity II मात्रा I ≤ मात्रा II

  5. Quantity I = Quantity II or relationship cannot be established मात्रा I = मात्रा II या कोई संबंध स्थापित नहीं किया जा सकता

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This question compares surface areas but crucial information is incomplete. The problem gives radius ratio (2:3) but doesn't provide absolute values for radii. Without specific radius values or additional information, surface areas cannot be calculated or compared. The answer claims relationship cannot be established, which appears correct.

Multiple choice
  1. All three together are not sufficient तीनों एक साथ पर्याप्त नहीं हैं

  2. All three together are sufficient तीनों एक साथ पर्याप्त हैं

  3. I and II together are sufficient I तथा II एक साथ पर्याप्त हैं

  4. II and (I or III) are sufficient II तथा (I या III) पर्याप्त हैं

  5. III or (I and II) are sufficient III या (I तथा II) पर्याप्त हैं

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The inner radius of the cylinder can be found using volume conservation and the sheet's curved surface area. From Statement I, the cuboid volume is 10×5×12=600 cm³. From Statement II, thickness t=1.5 cm gives sheet area = Volume/t = 400 cm². When rolled into a cylinder, the sheet's length becomes the circumference and its width becomes the height. The curved surface area is 2πrh, and using the area-to-thickness relationship (A = L²), we solve for r: r = √(At/4πt) ≈ 4.6 cm. Statement III (mass/density) is irrelevant since volume is already known from dimensions.

Multiple choice
  1. Any two कोई भी दो

  2. I and II I तथा II

  3. I and II or III I तथा II या III

  4. Only I केवल I

  5. None of these इनमे से कोई नहीं

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Statement I: diameter equals the biggest side, meaning triangle is right-angled (angle in semicircle property). Statement II: radius = 12.5 cm, so diameter = 25 cm. For a right triangle inscribed in a semicircle with diameter 25 cm, if we assume maximum area (right isosceles), legs = 25/√2 ≈ 17.68 cm, area ≈ 156.25 cm². However, the problem is ambiguous - many right triangles can be inscribed. The claimed answer assumes I and II are sufficient, which may imply a specific construction.

Multiple choice
  1. Only I केवल I

  2. Only II केवल II

  3. Both I and II I और II दोनों

  4. Neither I nor II न ही I न II

  5. Either I or II या तो I या II

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement I: Area/Circumference = r/2 > 7, so r > 14. This gives a range, not a unique value. Statement II: Diameter ≤ 32 means r ≤ 16, also a range. Combined, we get 14 < r ≤ 16, which still doesn't give a specific radius value. Therefore neither statement alone nor both together can determine the exact radius.

Multiple choice

The question given below is followed by some statements. Read the question carefully and determine which of the given statements is/are necessary/required to answer the question. नीचे दिए गए प्रश्न के बाद कुछ कथन दिए गए हैं। प्रश्न को सावधानी से पढ़िए और ज्ञात कीजिये प्रश्न का उत्तर देने के लिए दिए गए कथनों में से कौन सा आवश्यक / महत्वपूर्ण है । What is the cost of painting the walls of a rectangular room? एक आयताकार कमरे की दीवारों को पेन्टिंग करने की लागत क्या है? I. Length, breadth and height of the room are in the ratio 3 : 2 : 1. II. Length of the room is equal to the side of the square whose area is 2304 m.2 and cost of painting the walls is Rs. 85 per sq. m. III. Breadth of the room is equal to the height of the triangle whose base is 8 m. and area is 128 m.2 and cost of painting the walls is Rs. 85 per sq. m. I. कमरे की लम्बाई, चौड़ाई और ऊँचाई में अनुपात 3 : 2 : 1 है । II. कमरे की लम्बाई वर्ग की भुजा के बराबर है जिसका क्षेत्रफल 2304 मी.2 और दीवारों की पेंटिंग करने की लागत 85 रुपये प्रति वर्ग मीटर है । III. कमरे की चौड़ाई त्रिभुज की ऊँचाई के समान है जिसका आधार 8 मी. है और क्षेत्रफल 128 मी.2 है और दीवारों की पेंटिंग करने की लागत 85 रुपये प्रति वर्ग मीटर है ।

  1. I and II I और II

  2. I and II I और III

  3. Only III केवल III

  4. I and either II or III I और या II या III

  5. Any two of the three तीन में से कोई दो

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Statement I provides the ratio 3:2:1 for length:breadth:height, but we need actual measurements to compute painting cost. Statement II gives length = sqrt(2304) = 48 m and the rate Rs. 85/sq.m. Statement III gives breadth from triangle area: 128 = 1/2 × 8 × height, so breadth = 32 m, plus the rate Rs. 85/sq.m. Using I with either II or III gives all dimensions: with II, length = 48 m, so breadth = 48 × 2/3 = 32 m, height = 48 × 1/3 = 16 m; with III, breadth = 32 m, so length = 32 × 3/2 = 48 m, height = 16 m. Either combination allows calculating wall area = 2(48+32) × 16 and multiplying by rate.

Multiple choice
  1. Quantity I > Quantity II मात्रा I > मात्रा II

  2. Quantity I ≥ Quantity II मात्रा I ≥ मात्रा II

  3. Quantity II > Quantity I मात्रा II > मात्रा I

  4. Quantity II ≥Quantity I मात्रा II ≥ मात्रा I

  5. Quantity I = Quantity II or Relation cannot be established मात्रा I = मात्रा II या संबंध स्थापित नहीं किया जा सकता है

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The door wedge is a sector with radius 10 cm and angle 24°, having uniform thickness 3 cm. Sector area = (24/360) × π × 10² = (1/15) × 100π ≈ 20.94 cm². Volume = area × thickness = 20.94 × 3 ≈ 62.83 cm³, which is greater than 60 cm³.

Multiple choice
  1. Quantity I > Quantity II मात्रा I > मात्रा II

  2. Quantity I ≥ Quantity II मात्रा I ≥ मात्रा II

  3. Quantity I < Quantity II मात्रा I < मात्रा II

  4. Quantity I ≤ Quantity II मात्रा I ≤ मात्रा II

  5. Quantity I = Quantity II or relationship can’t be established मात्रा I = मात्रा II या सम्बन्ध स्थापित नहीं किया जा सकता

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Quantity I: Radius increased by 12%, so base area increases by (1.12)² - 1 = 25.44%. Quantity II: Diameter increased by 12%, which means radius also increases by 12%, so base area increases by the same 25.44%. Therefore Quantity I = Quantity II.

Multiple choice
  1. Only A and B केवल A और B

  2. Only B केवल B

  3. Only C केवल C

  4. Either A or C या तो A या C

  5. Data inadequate आंकड़े अपर्याप्त

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

We need the area of two adjacent walls to find painting cost. Statement A gives base area = L × B = 24. Statement B gives B : L : H = 4 : 6 : 5, letting B = 4k, L = 6k, H = 5k. From A: 4k × 6k = 24, so 24k² = 24, k² = 1, k = 1. This gives exact dimensions: B = 4, L = 6, H = 5. Two adjacent walls have areas L × H and B × H = 6 × 5 + 4 × 5 = 50 sq m. Statement C alone gives one wall area but not which wall or dimensions.

Multiple choice
  1. Only I and II केवल I और II

  2. Only II and III केवल II और III

  3. Only I and III केवल I और III

  4. All I, II and III सभी I, II और III

  5. Any two of the three तीन में से कोई दो

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Any two statements can find the volume: II+III gives V=πr²h=616×28; I+II gives h from r=h/2; I+III gives r from h/28 and V=π(h/2)²h. All pairs work.

Multiple choice

In the following questions, two quantities are given as Quantity I and Quantity II. Find the correct relationship among them. Quantity I: Area of the square is 7200 cm2 which is four times the area of the rectangle whose length and breadth is in the ratio of 9:8. What is the sum of length and breadth of the rectangle? Quantity II: A rectangular water tank is 300 cm×488 cm is dug inside a circular field. The area of the remaining portion is 12000cm2 . Find the radius of the circular field. निम्नलिखित प्रश्नों में, दो मात्राएँ मात्रा I और मात्रा II के रूप में दी गई हैं। इन मात्राओं के बीच सही सम्बन्ध ज्ञात कीजिये। मात्रा I: एक वर्ग का क्षेत्रफल 7200 सेमी2 है जो आयत के क्षेत्रफल का चार गुना है जिसकी लम्बाई और चौड़ाई 9:8 के अनुपात में है। आयत की लंबाई और चौड़ाई का योग क्या है? मात्रा II: एक आयताकार पानी की टंकी 300 सेमी × 488 सेमी माप की एक वृत्ताकार क्षेत्र के अंदर खोदा जाता है। शेष भाग का क्षेत्रफल 12000 सेमी2 है । वृत्ताकार मैदान की त्रिज्या ज्ञात कीजिये।

  1. Quantity I > Quantity II मात्रा I > मात्रा II

  2. Quantity I > Quantity II मात्रा I ≥ मात्रा II

  3. Quantity II > Quantity I मात्रा II > मात्रा I

  4. Quantity II ≥ Quantity I मात्रा II ≥ मात्रा I

  5. Quantity I = Quantity II or Relation cannot be established मात्रा I = मात्रा II या संबंध स्थापित नहीं किया जा सकता है

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Quantity I: Square area is 7200 cm², which equals 4 × rectangle area. So rectangle area = 1800 cm². With length:breadth = 9:8, let dimensions be 9x and 8x. Then 9x × 8x = 72x² = 1800, giving x = 5. Length + breadth = 45 + 40 = 85 cm. Quantity II: Circle area = tank area + remaining = (300 × 488) + 12000 = 158400 cm². Using πr² = 158400, r ≈ 224.5 cm. Since 224.5 > 85, Quantity II is greater.

Multiple choice

Each question below contains a statement followed by Quantity I and Quantity II. Find both to find the relationship between them. Mark your answer accordingly. नीचे दिए गए प्रत्येक प्रश्न में मात्रा I और मात्रा II के बाद कथन दिए गए है। दोनों के बीच संबंध ज्ञात करने के लिए दोनों का मान ज्ञात कीजिये। तदनुसार सही उत्तर चुनिए। Quantity I: A rectangular plot measuring 72 meters by 48 meters is to be enclosed by wire fencing along the boundary of the plot. The fence will be tied on poles that will be placed along the boundary. Number of poles required for fencing if each pole is at a distance of 8 meters. Quantity II: Radius of a circle whose area is 2464 sq.meter. मात्रा I: 48 मीटर गुना 72 मीटर माप वाले एक आयताकार मैदान को इसकी सीमा के साथ घेरते हुए तार का बाड़ लगाना है। बाड़ को सीमा के साथ खम्भों पर बाँधा जाएगा। बाड़ लगाने के लिए आवश्यक खम्भों की संख्या यदि प्रत्येक खम्भे के बीच कि दूरी 8 मीटर है। मात्रा II: एक वृत्त की त्रिज्या जिसका क्षेत्रफल 2464 वर्ग इकाई है।

  1. Q1 > Q2

  2. Q1 ≥ Q2

  3. Q1 < Q2

  4. Q1 ≤ Q2

  5. Q1 = Q2 or relation cannot be established. Q1 = Q2 या सम्बन्ध स्थापित नहीं किया जा सकता है

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Quantity I: Rectangular plot perimeter = 2 × (72 + 48) = 240 meters. Poles at 8m distance means 240/8 = 30 poles needed. Quantity II: Circle area = 2464 = πr² = (22/7)r². Solving: r² = 2464 × 7/22 = 784, so r = √784 = 28 meters. Comparing: 30 > 28, so Q1 > Q2. For fencing poles, note that poles are placed at corners and along the boundary at equal intervals.

Multiple choice

Each of these questions consists of a question followed by informations in three statements. You have to study the question and the statements and decide that information in which of the statement(s) is/are necessary to answer the question. What is the cost of flooring a rectangular room? Statement I: The ratio of length and breadth of the room is 5:4. Statement II: The length of the room is 50 meters and the cost of flooring is Rs.1000 per square meter. Statement III: The perimeter of the room is 180 meters and the cost of flooring is Rs.1000 per square meter. नीचे प्रत्येक प्रश्न में, एक प्रश्न और उसके बाद तीन कथनों में जानकारी दी गई है। आप प्रश्नो और कथनों का अध्ययन कीजिए और यह तय कीजिये कि कौनसा/से कथनों में दी गई जानकारी प्रश्न का उत्तर देने के लिए आवश्यक है/हैं। आयताकार कमरे में फर्श बिछाने की लागत क्या है? कथन I: कमरे की लंबाई और चौड़ाई का अनुपात 5: 4 है। कथन II: कमरे की लंबाई 50 मीटर है और फर्श बिछाने की लागत 1000 रुपये प्रति वर्ग मीटर है। कथन III: कमरे की परिधि 180 मीटर है और फर्श बिछाने की लागत 1000 रुपये प्रति वर्ग मीटर है।

  1. I and II I तथा II

  2. II and III II तथा III

  3. I and II or III I तथा II या III

  4. Any two कोई भी दो

  5. All three together तीनो एक साथ पर्याप्त हैं

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

To find flooring cost, we need room area (length × breadth) and cost per square meter. Statement II: length = 50m, cost = Rs.1000/sqm - but we need breadth. Statement III: perimeter = 2(length + breadth) = 180m, cost = Rs.1000/sqm - gives breadth if we have length, or vice versa. Statement I: ratio 5:4 alone is insufficient. With II+III: from III, breadth = 40m (since 2(50+b)=180), cost = 50×40×1000. With I+II or I+III: we can solve for both dimensions. Any two statements together are sufficient.