Question

Please help me. Explanation needed.

Answer 1

The answer is D

Explanation:

You are basically looking for the area of this circle, the formula would be A=Pi*r^2. So plug the values in and it would be, A=3.14*400, we know the radius is 20 because the diameter is double that, and square the radius, this gives you 400.

Answer 2

D, 1250 square feet

Explanation:

Area of a circle:

`\pi * r^2`

Diameter is twice the radius, so the radius is 20 ft.

Thus the area of grass is 400pi