Mensurationeasy · Past Paper
The volume of a sphere is 4.5π cm³. What is its radius?
A1.5 cm
B3 cm
C2.25 cm
D1 cm
✓ Correct Answer: A — 1.5 cm
(4/3)πr³ = 4.5π => r³ = 4.5 × 3 / 4 = 13.5 / 4 = 3.375. r = 1.5 cm.
Share this question
More from Mensuration
- What is the surface area of a sphere whose volume is 4.5π cubic units?
- Find the total surface area of a prism of height 10 cm and base a square of side 5 cm.
- The area of the base of a cone is 154 cm² and its slant height is 10 cm. Find its TSA.
- A spherical ball of radius 3 cm is melted and recast into three spherical balls. The radii of two of the balls are 1.5 cm and 2 cm. Find the radius of the third ball.
- If the side of a square base of a pyramid is 6 cm and its slant height is 10 cm, find its lateral surface area.