Daniela has a rectangular yard with a pool in the shape of a semicircle. how many square feet of grass does daniela need to cover her yard, but not the pool?

Part 1) Area of rectangle

Part 2) Area of semicircle

Par 3) Total area of grass

Step-by-step explanation:

we know that

The total area of grass is equal to the area of rectangle minus the area of semicircle

step 1

Find the area of rectangle

The area of rectangle is equal to

step 2

Find the area of semicircle

The area of semicircle is equal to

we have

-----> the radius is half the diameter

substitute

step 3

Find the total area of grass

what's that