Question

A rectangular piece of paper 11 cm and 4cm is rolled along
its length
overlapping to make a cylinder.
Find the volume of the cylinder? ​

Answer 1

Answer:

Given a Rectangular piece of paper 11cm×4cm is folded without overlapping to make a cylinder of height 4 cm

The length of the paper becomes the circumference of the base of the cylinder and width becomes height.

Let radius of the cylinder=r and height=h

Circumference of the base of cylinder =2πr=11cm

⇒2×

7

22

×r=11

∴r=

4

7

cm

Now h=4cm

Volume of the cylinder (V)=πr

2

h

=

7

22

×

4

7

×

4

7

×4cm

3

=38.5

=3

Answer 2

Answer:

Step-by-step explanation:

I'm assuming 11cm is the length.

Then the circumference of the newly formed cylinder is 11, thus making the diameter 11/π. The volume of this is 121/π^2, and then multiply by four to get 484/π^2