Question

A rectangular piece of paper is 22 cm in length and 10 cm in width. It is rolled
into a cylinder along its length. Find the surface area of this cylinder.
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Answer 1

Answer:

Step-by-step explanation:

First of a length is made to be circumference of the cylinder. Width is the height.

2πr = 22

πr = 11

r = 11*7/22 = 3.5 cm.

Height h = 10 cm.

TSA of cylinder = 2 πr(h + r) = 2(22/7(3.5)(13.5) )

= 22* 13.5

= 297 cm² .