A drinking glass is in the shape of a frustum of a cone of height 14 cm. The diameters of its two circular ends are 4 cm and 2 cm. Find the capacity of the glass.

Given

Height of frustum (h) = 14 cm

Radius of larger circle end (R) = 4/2 = 2 cm

Radius of smaller circle end (r)= 2/2= 1 cm

Find out

We have to find the capacity of the glass

Solution

Capacity of glass = Volume of Frustum

= 1/3 πh (r2 + R2 + rR)

= 1/3 × π × 14 ((1 × 1) + (2 × 2) × (2 × 1))

= 1/3 X 22/7 × 14 × 7

=102.67 cm3

Answer

Hence, capacity of glass =102.67 cm3

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