Question

A bucket is in the form of a frustum of a cone. Its depth is 15cm and the diameters of the top and the bottom are 56 cm and 42 cm respectively. Find how many litres of water can the bucket hold. [Take π=22/7]

Answer 1

Greater diameter of the frustum = 56 cm

So, radius of the frustum = R = 28 cm

Smaller diameter of the frustum = 42 cm

So, Radius of the smaller end of the frustum = r = 21 cm

and Height of the frustum = h = 15 cm

Capacity of the frustum

= 28490 cm³

= 28.49 litres