The sector of a circle has radius of 21 cm and central angle 225o. Find its perimeter?	Choose the correct option:
A) 91.5
B) 92
C) 93
D) 94
E) 124.5
Perimeter of the sector = length of the arc + 2(radius)   = (225/360 * 2 * 22/7 * 21) + 2(21)   = 124.5 cm   Answer: Option 124.5
<result>E</result>
The sector of a circle has radius of 21 cm and central angle 225o. Find its perimeter?