Question

If the circumference of the base is 50 cm and the height is 10 cm in a right circular cylinder, then find the CSA of the cylinder.

Answer 1

The CSA of a cylinder having its base radius 'r' and height 'h' is given by: Curved surface area (CSA) of cylinder = 2πrh sq.units

circumference = 2πr units

In this example circumference is 50 cm so that means that the radius is: 50 cm/2π

Substituting the values into the formula for CSA, we get the CSA of the cylinder then is:

500 cm²

Answer 2

Circumference of the base of cylinder = 50 cm

Therefore, 2πr = 50

Height h = 10 cm

Curved surface area of cylinder = 2πrh sq.cm.

= 50 × 10

= 500 cm²

Therefore, curved surface area of cylinder is 500 cm².