Question

Q1.A rectangular piece of paper is 22cm long and 10cm wide. A cylinder is formed by

rolling the paper along its length. Find the curved surface area of cylinder​

Answer 1

Step-by-step explanation:

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

3