Question

if the diameter of a circular cylinder is 28 cm and its height is 20 CM then the curved surface area is​

Answer 1

Given:

• Diameter of a cylinder = 28cm

• Height of the cylinder = 20cm

To find :

• Curved surface Area of cylinder =? .

Solution :

As we know that ,

•CSA of cylinder = 2πrh

• Radius = Diameter /2 = 28/2 = 14cm

=> CSA of cylinder = 2 ×22/7× 14×20

=> CSA of cylinder = 88×20

=> CSA of cylinder = 1760 cm²

Answer 2

Answer:

CSA of cylinder= 2πrh

= 2×22/7×28/2×20

= 44×2×20

= 1760 cm sq .