Question

Find the area of the figure. please have an explanation

Answer 1

760.25

Explanation:

The formula for the surface area of a sphere is A=4πr².

r=the radius, or half of the diameter, of the circle.

when you plug in the radius and answer the formula, you should get 1520.5.

You should then divide it by 2 since we are trying to find half of the circle.

Answer 2

Explanation:

`\text{The area of a circle is }\pi r^2\text{ so the area of half a circle is }(\pi r^2)/(2)\\ \\ A=(\pi 11^2)/(2)\\ \\ A=(3.14(121))/(2)\\ \\ A\approx 189.97cm^2`