Question

Area of a semicircle with a radius of 3

Answer 1

`(9\pi )/(2)` cm²

Explanation:

The area of a semicircle can be expressed by the formula
`(\pi r^(2) )/(2) = A`.

When you plug in the radius, you get
`(\pi 3^(2) )/(2) = (\pi 9)/(2) = (9\pi )/(2)`.

Answer 2

Answer: 9π/2

Explanation:

A semicircle is half of a circle. Therefore, you must divide the area by 2.

`A=(\pi r^2 )/(2)`

Since we know the radius, we can directly plug it into the formula.

`A=(\pi (3)^2)/(2) =(9\pi )/(2)`

Since the problem stated to give the answer in terms of π, 9π/2 is our answer.