Q8 of 45 Page 11

A rectangular sheet of paper, 44 cm× 20 cm, is rolled along its length to form a cylinder. Find the total surface area of the cylinder thus generated.

Given: Length = 44 cm


Breadth = 20 cm


To find: TSA of cylinder.


Formula Used:


Circumference of circle = 2πr


TSA of cylinder = 2πr (h + r)


Explanation:


Dimensions of rectangular sheet of paper = 44cm × 20 cm


When this sheet of paper is rolled along its length:


So,


Circumference of base thus form = 44 cm





Radius = 7 cm


Height = 20 cm


∴ Total surface area of cylinder =


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