How to find the areas of the shaded region? its precalculus?

Question

i don't have a picture, but its a square and inside is a circle

the circle isn't shaded, but the square is

the top of the square is measure 2 and same with the left side of the square, its 2

so how do i find the area?

Answer 1

area of square = 2*2 = 4 sq. units

diameter of circle = 2 ==> radius of circle = 1 => area = pi

area between circle and square = area of square - area of circle = 4 - pi

That's usually the way you have to find these funny shaded areas:  find the areas of the two bounding shapes, and subtract.

In this case, the shaded area is the area of square - area of circle = area of shaded area outside circle and inside square