Can you solve this 6th grade math problem?

[Excited Penguin]

Here's how I did it:

The area of the rectangle is 200, lower half that is 100.  The area of one circle is r^2(pi), or 5x5x pi = 78.5.

100-78.5 = 21.5

Boru

So, what I said, only I said it in English.