The lateral surface area of a cylinder is 3862.2cm
2
and its height is 15cm. Find its volume (take π=3.14) correct to one decimal place.
- A79175.1cm
3 - B88275.2cm
3 - C78275.2cm
3 - D89175.1cm
3
Solution & Step-by-step Explanation
The formula for the lateral (curved) surface area (LSA) of a cylinder is:
LSA=2πrh
Given:
LSA=3862.2cm
2
h=15cm
π=3.14
Let's find the radius r:
3862.2=2×3.14×r×15
3862.2=94.2×r
r=
94.2
3862.2
=41cm
Now, the formula for the volume (V) of a cylinder is:
V=πr
2
h
V=3.14×(41)
2
×15
V=3.14×1681×15
V=3.14×25215
V=79175.1cm
3
Therefore, the volume of the cylinder is 79175.1cm
3
.
LSA=2πrh
Given:
LSA=3862.2cm
2
h=15cm
π=3.14
Let's find the radius r:
3862.2=2×3.14×r×15
3862.2=94.2×r
r=
94.2
3862.2
=41cm
Now, the formula for the volume (V) of a cylinder is:
V=πr
2
h
V=3.14×(41)
2
×15
V=3.14×1681×15
V=3.14×25215
V=79175.1cm
3
Therefore, the volume of the cylinder is 79175.1cm
3
.