Solve the Problem $y = \sqrt { 36 - x ^ { 2 } }$

Multiple Choice

Solve the problem.
-Find the length of the curve $y = \sqrt { 36 - x ^ { 2 } }$ between $x = 0$ and $x = 3$ .

A) $\frac { 1 } { 6 } \pi$
B) $2 \pi$
C) $\frac { 3 } { 2 } \pi$
D) $\pi$