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Question

Find the quantity of water in a frustum of height 14 cm and radii 3 cm and 9 cm if water is filled upto brim.
  1. 1716

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Solution

The correct option is A 1716

Given, h=14cm,r1=3cm,r2=9cm

Volume of the frustum
=13πh(r12+r22+r1r2)

Therefore, volume of frustum
=13×227×14(9+81+27)
=13×22×2×117
=1716 cm3

Volume of water = volume of frustum = 1716 cm3


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