Question

write formula to find curved surface area of 5 rupee coins​

Answer 1

Answer:

The formula is as similar as the CSA of cylinder.

that is 2πrh.

Answer 2

Answer:

Step-by-step explanation:

5 rupee coin is a cylinder.

A cylinder is a group of circles stacked onto each other.

Curved surface area would be equal to the sum of all circumferences.

No. of circles is the height.

Circumference of 1 circle is 2πr.

Curved surface area is equal to 2πrh.