Mensurationeasy · Past Paper
The surface area of a sphere is proportional to...
AThe radius
BThe square of the radius
CThe cube of the radius
DThe square root of the radius
✓ Correct Answer: B — The square of the radius
The formula 4πr² shows that surface area is proportional to the square of the radius.
Share this question
More from Mensuration
- What is the area of a segment of a circle of radius 10 cm, if the chord subtends a right angle at the center? (pi=3.14)
- A cube's total surface area is numerically equal to its volume. What is the side of the cube?
- A swimming pool is 20 m long, 15 m wide, and 2 m deep. Find its volume.
- Calculate the volume of a hemisphere with diameter 14 cm.
- What is the volume of a cone if its height is 15 cm and area of its base is 42 cm^2?