Mensurationmedium · Past Paper
Find the height of a cylinder whose curved surface area is 440 cm² and radius is 7 cm.
A5 cm
B10 cm
C15 cm
D20 cm
✓ Correct Answer: B — 10 cm
CSA = 2πrh => 440 = 2 * (22/7) * 7 * h => 440 = 44h => h = 10 cm.
Share this question
More from Mensuration
- What happens to the volume of a cylinder if its radius is halved and its height is doubled?
- The radius of a sphere is 21 cm. Find its surface area.
- A cuboid has dimensions 12 cm x 10 cm x 8 cm. Find its total surface area.
- A metal cylinder of radius 4 cm and height 10 cm is melted to form spheres of radius 2 cm each. How many spheres can be made?
- If the volume of a sphere is 4/3 π cm^3, what is its diameter?