2019 · Q53
A right circular cylinder has a diameter of 20 cm, and its curved surface area is 1000 cm². What is the volume of the cylinder?
Elementary MathematicsMensuration
- A4000 cm³
- B4500 cm³
- C5000 cm³
- D5200 cm³
Explanation
Curved surface area 2πrh = 1000 with r = 10 gives h = 1000/(20π) = 50/π cm. The volume is πr²h = π·100·(50/π) = 5000 cm³. The answer is (C).