# Math question

posted by
**Anne** on
.

I don't understand how to find the aproximate area of a shaded region

This problem has a big cirlce with 1/4 shadded with a radius of 20 cm.

the answer chocies are

A. 90 cm squared

B. 270 cm squared

C. 314 cm squared

D. 1.256 cm squared

how do I find the answer?