CAT Quantitative Ability Questions | CAT Geometry questions
CAT/1998
Question . 99
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?
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Explanatory Answer
Method of solving this CAT Quantitative Ability Question from Geometry question
(c) PR = PB + AR – 5 = 20 + 20 – 5 [∴AB = 5 cm]
So, perimeter = PR + PQ + QR
= 20 + (20 – 5) + 20 + (20 – 10) + 20 + (20 – 12)
= 35 + 30 + 28 = 93