Q. 8

# 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.

Answer :

**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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