The radius of a circle is 4 inches. How would you calculate the circumference?

A
�
⋅
4
2

�
�
.
2
π⋅4
2
in.
2

B
2
⋅
�
⋅
4

�
�
.
2⋅π⋅4 in.

C
�
⋅
8
2

�
�
.
2
π⋅8
2
in.
2

D
2
⋅
�
⋅
8
2⋅π⋅8 in.

B

2πr = 2π(4) = 8π inches