The circumference of a circle is 28 pi inches. What is the length of the radius of this circle?
Answer
A
56 in.
B
14 in.
C
21 in.
D
28 in.
Explanation
Use the circumference formula C = 2πr. Substituting 28π for the circumference gives 28π = 2πr, so dividing by 2π gives r = 14 inches. The correct choice is 14 in.
AI-written and checked against the verified answer.