Question

4. A rectangular sheet of paper is 44 cm long and 14 cm wide. If the sheet is rolled along the
length to make a cylinder, find the curved surface area and total surface area of the
cylinder.
Please Explain ​

Answer 1

Answer:

Length of the sheet=Circumference of the base.

⇒44=2πr

⇒r=44×

2

1

×

22

7

=7

∴ Radius=7cm

Breadth of the metal sheet=height of the cylinder

h=20cm

Curved surface area=2πrh

=2×

7

22

×7×20=880sq.cm

∴ Curved surface area is 880sq.cm