Question

The diameter of a circle is 16 centimeters. How would you calculate the area?
A
�
⋅
8
2

�
�
.
2
π⋅8
​2
​​ cm.
​2
​​

B
2
⋅
�
⋅
8
2⋅π⋅8 cm.

C
�
⋅
1
6
2

�
�
.
2
π⋅16
​2
​​ cm.
​2
​​

D
2
⋅
�
⋅
1
6
2⋅π⋅16 cm.

Answer 1

C. To calculate the area of a circle, you use the formula A = πr^2, where r is the radius of the circle. Since the diameter is given, you need to first divide it by 2 to find the radius.

Radius = Diameter / 2 = 16 cm / 2 = 8 cm

Now plug the radius into the formula:

A = π(8)^2 = π(64) = 64π cm^2

So the area of the circle is 64π square centimeters.