The ratio of the area of a circle, P , to the area of another circle, Q , is 16/81 . If the radius of circle P is 8 units, what is the radius of circle Q ?

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asked Oct 9, 2018 139k views

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Abhinsit · Answer 1 · 2018-10-13T12:59:21+0000

ratio of the radii = sqrt16 / sqrt81 = 4/9

so radius of circle Q is found by solving 4/9 = 8/x where x = radius of Q

x = 2*9 = 18

radius of circle Q = 18.

The ratio of the area of a circle, P , to the area of another circle, Q , is 16/81 . If the radius of circle P is 8 units, what is the radius of circle Q ?

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