Question

The diameter of a semicircle is 18 miles. What is the semicircle's area? Use 3.14 for a square miles Submit can you explain

Answer 1

Given:

Diameter, d = 18 miles.

That is radius r = 9 miles.

To find the semicircle's area:

Explanation:

Using the area formula of a semicircle,

$\begin{gathered} A=\frac{\pi r^2}{2} \\ A=\frac{3.14\times9\times9}{2} \\ A=127.17\text{ square miles} \end{gathered}$

Thus, the area of the semicircle is A=127.17 square miles.