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 ।
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