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Quantitative Aptitude

Circles

Three circles...

Question

Three circles, each of radius 20 and centres at P, Q, R. Further, AB= 5, CD= 10 and EF= 12. What is the perimeter of the triangle PQR?

A

120

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B

66

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C

93

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D

87

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Solution

The correct option is C
93

PR=PB+AR-5=20+20-5 [because AB =5 cm]
So, perimeter = PR +PQ+QR
=(20+20-5)+(20+20-10)+(20+20-12)
= 35+30+28=93

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