Solve the Problem $\pi$ )
A) $\pi$ /2 In
B) 11 $\pi$ In
C) 13

Multiple Choice

Solve the problem.
-The diameter of a tree was 11 in. During the following year, the circumference increased About how much did the tree's diameter increase? (Leave your answer in terms of $\pi$ .)

A) $\pi$ /2 in.
B) 11/ $\pi$ in.
C) 13/ $\pi$ in.
D) 2/ $\pi$ in.