Question

How do you find the area of the circle?

Answer 1

Because is is a semicircle you do the same thing as you did with the rectangle but then divide by 2 or you can follow this formula
A=pi·r·r. (Area=3.14×radius×radius)
A=pi·r2. (Area=3.14×radius squared)

Answer 2

It’s a semicircle, so it would be 1/2 pi r^2.