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The sector of a circle has radius of 21 cm and central angle 135o. Find its perimeter?

A.92.5 cm
B.94.5 cm
C.93.5 cm
D.91.5 cm
Answer and Feedback
Answer:D
Feedback:Perimeter of the sector = length of the arc + 2(radius)
= (135/360 * 2 * 22/7 * 21) + 2(21)
= 49.5 + 42 = 91.5 cm

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Practice Mensuration Online Test 4 | Englishfreetest.com

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