The sector of a circle has radius of 21 cm and central angle 150o. Find its perimeter?  Pick
A) 91.5	B) 91.4	C) 97	D) 91.3	E) 91.1
Perimeter of the sector = length of the arc + 2(radius)   = (150/360 * 2 * 22/7 * 21) + 2(21)   = 55 + 42= 
<gadget id="calculator">55 + 42</gadget>
<output>97</output>
97 cm   Answer:97
<result>C</result>
The sector of a circle has radius of 21 cm and central angle 150o. Find its perimeter?