Question

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

Answer 1

Given: Height of frustum = 14cm

Diameter of 1^st circular end = 4cm

So, radius (R) = 2cm

Diameter of 2^nd circular end = 2cm

So, radius (r) = 1cm

Capacity of the glass = Volume of frustum

= 102.66 cm³

Hence, the volume of glass = 102.66cm³