7. A rectangular piece of paper of dimensions 22cm by
12 cm, is rolled along its length to form a cylinder,
Find the volume of the cylinder so formed.
Answers
Answered by
1
Answer:
v=1452/π
Step-by-step explanation:
As a rectangular piece of paper is 22 cm long and 12 cm wide and a cylinder is formed by rolling along its length.
∴ The height of the cylinder is 12 cm.
∴ The lateral surface of the cylinder is same.
⇒22×12=2πr×12
r=
π
11
.
∴ Radius of the cylinder =
π
11
∴ Volume of the cylinder
V=π×
π
2
121
×12
V=
π
1452
V=
π
1452
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