Circle A has an area of 500 in.². The diameter of the circle B is three times the diameter of Circle A. Estimate the area of circle B.

Question

Maxim Burton

Mathematics

19 July, 11:19

Circle A has an area of 500 in.². The diameter of the circle B is three times the diameter of Circle A. Estimate the area of circle B.

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Aditya Vazquez · Answer 1

R^2π=500in^2

r^2=500 in^2/π

r = (500 in^2/π) ^ (1/2) = 12.62 in

plug it in:

db=3da=3 (2 (12.62)) = 75.69

r of b = 75.69/2=37.85in

A of b = (37.85in) ^2π = 8.22 in^2