Question

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

Answer 1

Step-by-step explanation:

ANSWER

Length of the rectangular paper will be height of the cylinder and width of the rectangular paper is circumference of the cylinder

∴2πr=10cm and h=22cm

Now volume of the cylinder

=πr

2

h

7

22

×

2π

10

×

2π

10

×22cm

3

=

7

22

×

2

10

×

22

7

×

2

10

×

22

7

×22cm

3

=175cm

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