The sector of a circle has radius of 21 cm and central angle 120o. Find its perimeter?  Pick
A) 91.5 cm	B) 11.5 cm	C) 91.8 cm	D) 86 cm	E) 99.5 cm
Perimeter of the sector = length of the arc + 2(radius)   = (120/360 * 2 * 22/7 * 21) + 2(21)   =44 + 42= 
<gadget id="calculator">44 + 42</gadget>
<output>86</output>
86 cm   Answer:86 cm
<result>D</result>
The sector of a circle has radius of 21 cm and central angle 120o. Find its perimeter?