Question

Find the diameter of the circle with the given measurement. Leave answer in terms of pi.

A=100pi

Answer 1

`A=100\pi \\ A=\pi R^2 \\\\ 100\pi= \pi R^2 \\\\ R^2=100 =>\boxed{R=10} \\\\ D=2R \\\\ D=2*10 \\\\ \boxed{D=20}`