Tag: circle measures

Question 1

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

The semicircle temperature dial on a thermostat has a radius of $2\ cm$. What is the dial's area?

$6.20\ cm^2$
$3.28\ cm^2$
$4.28\ cm^2$

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Answer

$6.28\ cm^2$

Question 2

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

A lounge has a semicircular rug with a diameter of $4\ m$. What is the area of the rug?

$6.20$ $m^2$
$3.28$ $m^2$
$4.28$ $m^2$

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Answer

$6.28$ $m^2$

Question 3

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

Evaluate the area of the semicircle if its circumference is $15.15\ cm$? (Use $\pi = 3$)

$7.475$ $cm^2$
$6.575$ $cm^2$
$4.575$ $cm^2$

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Answer

$7.575$ $cm^2$

Question 4

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

What is the area of the semicircle if its circumference is $12.5\ cm$?

$4.28$ $cm^2$
$2.28$ $cm^2$
$1.28$ $cm^2$

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Answer

$6.28$ $cm^2$

Question 5

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

Calculate the area of a circular ring whose outer and inner radii are $12$ and $10\ cm.$

$118.16$ $cm^2$
$128.16$ $cm^2$
$148.16$ $cm^2$

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Answer

$138.16$ $cm^2$

Question 6

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

The area of the semicircle is $200\ m^2$. What is the radius of the semicircle?

$10\ m$
$11\ m$
$12\ m$
$13\ m$

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Question 7

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

Jackson measured the button on his shirt. Then he calculated that it has a semicircle of $25.12\ mm$. What is the button's radius? (Use $\pi = 3.14$).

$1\ mm$
$2\ mm$
$3\ mm$
$4\ mm$

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Question 8

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

A circular grassy plot of land, 42 m in diameter, has a path 3.5 m wide running around it on the outside. Find the cost graveling the path at Rs 4 per square meter.

$Rs 2002$
$Rs 2003$
$Rs 2004$
$Rs 2000$

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Question 9

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

The front wheels of a wagon are $2$ m in circumference and the back wheels are $3$ m feet in circumference. When the front wheels have made $10$ more revolutions than the back wheels, how many metres has the wagon travelled?

$40$ feet
$50$ feet
$60$ feet
$80$ feet

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Question 10

Multiple choice maths circle measures area between two concentric circles the area of ring semicircle and ring

The area in ( ${cm^2}$) of the largest triangle that can be inscribed in a semicircle of radius r cm is

${\cfrac{1}{3}\pi r^2}$
${2r^2}$
${r^2}$
${\cfrac{1}{2}\pi r^2}$

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