Question

Can someone help me and explain to me what to do

Answer 1

50.24

Explanation:

Area of a circle is:

A = πr²

where π is approximately 3.14, and r is the radius of the circle (half the diameter).

The diameter is 8 cm, so the radius is 4 cm. Therefore, the area is:

A = π (4 cm)²

A = 50.24 cm²

Answer 2

25.12^2

Explanation:

So, you are being asked to find the area of the circle. It says that the area is equal to pi times the radius squared, which would be pie times the diameter, or d.

So the diameter is 8 cm.

It tells you to use 3.14 for pi.

8 x 3.14= 25.12^2

So the area of the circle would be 25.12^2, and you would keep it like that.

Hope this helps!

(BTW, pi is the symbol at the bottom, where is says A= pi R^2)