RRB Junior Engineer Stage 1 Model Papers 2

Question : 4 of 99

Marks: +1, -0

The capacities of two hemispherical vessels are 6.4 litres and 21.6 litres. The ratio of their inner radii is

Solution:

{2/3πr^3_1}/{2/3πr^3_2}=6.4/21.6

=r^3_1/r^3_2=64/216=(4/6)^3=(2/3)^3

⇒ r_1/r_2=2/3

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