Question

The radius of a semicircle is 4 miles. What is the semicircle's area?

Answer 1

Answer:

8$\pi$ miles or 25.133 miles

Step-by-step explanation:

your radius is 4 miles.

The area of a circle is A= $\pi r^{2}$

Therefore, the area of this circle is $4^{2} \pi$, or 16$\pi$

Half of this area, because what you're looking for is a semi-circle, is:

8$\pi$ (exact) or 25.133 (rounded) miles.