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SSC CGL 2020 PYQ — Question 26

SSC CGL Tier II - Quant - 18 Nov 2020 • Quantitative Aptitude • Q26

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The radii of two cylinders are in the ratio 3 : 4 and their heights are in the ratio 8 : 5. The ratio of their volumes is equal to:

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Correct answer: A

Explanation

The correct answer is option 1 i.e. 9 : 10

r1 = 3x and r2 = 4x

h1 = 8y and h2 = 5y.

V1 : V2 = π\pi × r12 × h1 :   π\pi × r22 × h2

V1 : V2 = 72xy : 80xy

V1 : V2 = 9 : 10