Question

Help
Pls I need this question for school work

Answer 1

50π

Explanation:

You can use the area of a circle formula to find the area of a semicircle:

A = π
`r^(2)`

Then, substitute the value of the radius and square it:

A = 100π

If a circle with the same radius had an area of 100π, the area of the semicircle would have an area 1/2 that:

100π/2 = 50π

Answer 2

39.25 in²

Explanation:

Diameter = 10 in

Radius r = 10/2 = 5 in

`Area = (\pi r^(2))/(2)\\\\=(3.14*5*5)/(2)\\\\\\=(78.5)/(2)\\\\=39.25`