Question

Can you plz help :)

Answer 1

`((a^(2)*\pi ))/(2) + 8a`

Explanation:

We need to find the area of that semi circle and add it to the area of the rectangle. We can easily find the area of the rectangle with the equation length times width which is 4 *2a or 8a.

The radius is a and since the area of a semi-circle is (pi*r^2)/2, we can get a^2*pi/2.

Therefore, the equation would be
`((a^(2)*\pi ))/(2) + 8a`