Question

Hello I need help on this math question​

Answer 1

Answer:

$50.24\ cm ^2$

Step-by-step explanation:

Let's start by finding the radius of this circle.

$D=2r\\8=2r\\\text{Divide both sides by 2}\\r=4$

Note that in the equation:

$A=\pi r^2$

"A" stands for area and "r" stands for radius.

Now, let's substitute the given values into the equation.

$A=\pi r^2\\A=3.14*(4)^2\\A=3.14*16\\A=50.24\ cm^2$