Math, asked by Kunal1111111, 1 year ago

the radii of the circles are 9cm and 12cm respectively find the radius of the circle whose area is equal to the sum of the areas of these two circles

Answers

Answered by triloksuthar10

7

areas of both the circle will be 81pi and 144pi..
add the and equate it to pi*r*r,

therefore, r*r=225
r=15cm

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