Mensuration Practice Test 1

Question : 29 of 40

Marks: +1, -0

A frustum-shaped glass of milk is filled up to the level of 10 cm. If its radii of both its ends are 6 cm and 4 cm find the capacity of glass?

Solution:

Volume of the frustum =

1/3 πh(R^2+rR+r^2)

1/3 × {22}/7 × 10(6^2+6×4+4^2)

1/3 × {22}/7 10(36+24+16)

1/3 × {22}/7 × 10 × 76

≈ 796

cm^3

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