Mensurationhard · Past Paper
The ratio of the radii of two spheres is 2:3. What is the ratio of their volumes?
A4:9
B2:3
C8:27
D16:81
✓ Correct Answer: C — 8:27
Volume of sphere is proportional to r^3. Ratio = 2^3 : 3^3 = 8:27.
Share this question
More from Mensuration
- Find the volume of a sphere of diameter 6 cm.
- How much metal sheet is required to make a closed cylindrical tank of height 1.4 m and base diameter 140 cm?
- Find the TSA of a right prism with height 10 cm and base a right triangle with legs 3 cm and 4 cm.
- The area of the base of a cone is 154 cm² and its slant height is 10 cm. Find its TSA.
- Find the total surface area of the prism described in the previous question (base sides 3, 4, 5 and height 10).