Question

area of a semicircle with a radius of 3

Answer 1

Answer: 9π/2

Step-by-step explanation:

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

$A=\frac{\pi r^2 }{2}$

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

$A=\frac{\pi (3)^2}{2} =\frac{9\pi }{2}$

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

Answer 2

Answer:

$\frac{9\pi }{2}$ cm²

Step-by-step explanation:

The area of a semicircle can be expressed by the formula $\frac{\pi r^{2} }{2} = A$.

When you plug in the radius, you get $\frac{\pi 3^{2} }{2} = \frac{\pi 9}{2} = \frac{9\pi }{2}$.