Question

Help!!!cant seem to solve it.

Answer 1

A semi-circle is half of a circle. To find the area of the semi-circle, you should first understand how to find the area of a circle.

The general formula for the area of a circle is: $\pi r^{2}$, so intuitively, the area of a semi-circle is just $\frac{\pi r^{2}}{2}$
Now, a diameter is twice the length of the radius, so we divide the diameter by 2, to yield the length of the radius, being 1 ft.

Substitute everything into the equation, and we get:

$\frac{\pi 1^{2}}{2}$
$\frac{\pi}{2}$, which is about 1.5707... ft² ≈ 1.57ft² (nearest hundredth)

Answer 2

I think the answer is 3.14...