Question

The radii of two circles are 8 cm & 6 cm respectively find the radius of the circle having area equal to the sum of the area of two circles

Answer 1

area of 2 small circles = area of big circle

π(8×8)+π×6×6=πR×R

64π+36π=πR×R

100π=πR×R

R×R=100

R=10

Answer 2

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