Question

Find the weight of a solid cylinder of radius 10.5cm and height 60cm if the material of the cylinder weighs 5g per cm³.

Answer 1

It is given that

Radius of cylinder = 10.5cm

Height of cylinder = 60cm

We know that

Volume of cylinder = πr²h

By substituting the values

Volume of cylinder = (22/7) × (10.5)² × 60

So we get

Volume of cylinder = 20790 cm³

So the weight of the cylinder if the material weighs 5 g per cm³ = 20790 × 5 = 103950g

We know that 1000g = 1kg

Weight of the cylinder = 103950/1000 = 103.95kg

Therefore, the weight of solid cylinder is 103.95kg.