Question

a rectangular piece of paper having length 28cm and breadth 20cm is rolled along with the length to form a cylinder. find the curved surface area of the cylinder thus formed

Answer 1

See the attached file

Answer 2

Answer:

Step-by-step explanation:

The Sum is simple.

The C. S. A = 2πrh in which 2πr is the cicumference.

Thus in this case 2πr = 28

And h = 20

Therefore, C. S. A = 20*28=560