Question

For Touya03..............

Answer 1

This is basically how they got the correct answer.

First they used the area formula:

`\pi * {r}^(2)`

So for you that would be:

`\pi * {9.8}^(2)`

Which equals

301.7

Since there's a hole in the circle we do the area of a square which is base times height.

Which is 3 x 3 = 9 for your problem

Then we subtract

301.7 - 9 = 292.7 !

Which is almost exactly 292.57 since there is a margin