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General

General

Easy

Question

In the figure, two congruent circles are inscribed in a rectangle. If the area of one circle is 9 $straight pi$ , what is the area of the rectangle?

24
27
36
72

hint Hint:

area of rectangle=length*breadth

The correct answer is: 72

area of circle= $straight pi$ rr
$straight pi$ rr=9 $straight pi$
r= $square root of 9 straight pi divided by straight pi end root$
r=3
length of rectangle=4(r)=12
breadth of rectangle=2(r)=6
area of rectangle=lengthbreadth
=126
=72

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MathematicsGeneral

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