Mensurationeasy · Past Paper
If the radii of two spheres are in the ratio 1:4, then their surface areas are in the ratio:
A1:4
B1:8
C1:16
D1:64
✓ Correct Answer: C — 1:16
Ratio of areas = (r1/r2)² = (1/4)² = 1:16.
Share this question
More from Mensuration
- Find the total surface area of a cube if one of its faces has an area of 49 sq. cm.
- The lateral surface area of a cylinder is 94.2 sq. cm and its height is 5 cm. Find the radius of its base. (Use π = 3.14)
- A cube's total surface area is numerically equal to its volume. What is the side of the cube?
- The area of the base of a cylinder is 154 sq. cm and height is 5 cm. Find the volume.
- If the volume of a sphere is 4851 cubic cm, its surface area is: