3 years ago

The ratio of the area of a circle, P , to the area of another circle, Q , is 16/81 .

1 answer:

6 0

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.

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