Find the Radian Measure of the Given Angle $\frac { 5 \pi } { 2 }$

Find the radian measure of the given angle. 225o

A) $\frac { 5 \pi } { 2 }$
B) $\frac { 15 \pi } { 4 }$
C) $\frac { 45 \pi } { 4 }$
D) $\frac { 5 \pi } { 4 }$
E) $\frac { 5 \pi } { 8 }$