NIFT UG 2015 Question Paper with solutions

Question : 55 of 150

Marks: +1, -0

If the radii of the circular ends of a bucket 25 cm high is 4 cm and 2 cm. Then the capacity of the bucket is

Solution:

A bucket is in the form of frustum
Volume of frustum (bucket)

=1/2π(R_1^2+R_2^2+R_1R_2).h

=1/3×π(4^2+2^2+4×2)×25

={700π}/3cm^3

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