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
- A triangular prism has a base perimeter of 24 cm and lateral surface area of 240 cm². Find its height.
- Area of a quadrant of circle is 154 sq. cm. Find its radius.
- A cylinder and a cone have equal radii and their heights are in the ratio 2:3. What is the ratio of their volumes?
- The ratio of volumes of two spheres is 8:27. What is the ratio of their radii?
- What is the area of a rectangle whose length is 15 cm and breadth is 10 cm?