Solve the Problem $\frac { 128 } { \pi ^ { 2 } } \mathrm { ft }$

Multiple Choice

Solve the problem.
-Determine the length of a pendulum that has a period of 4 seconds.

A) $\frac { 128 } { \pi ^ { 2 } } \mathrm { ft }$
B) $\frac { \pi } { 8 } \mathrm { ft }$
C) $\frac { \pi } { 4 } \mathrm { ft }$
D) $\frac { \pi ^ { 2 } } { 32 } \mathrm { ft }$