Mensurationeasy · Past Paper
Calculate the surface area of a sphere having a diameter of 14 cm.
A154 sq. cm
B308 sq. cm
C616 sq. cm
D2464 sq. cm
✓ Correct Answer: C — 616 sq. cm
Surface area of a sphere = 4πr². Here r = 7 cm, so Area = 4 * (22/7) * 7 * 7 = 616 sq. cm.
Share this question
More from Mensuration
- A right circular cone is 3.6 cm high and its base radius is 1.6 cm. It is melted and recast into a right circular cone with base radius 1.2 cm. Find its height.
- If the radius of a sphere is doubled, how many times will its volume increase?
- The volume of a hemisphere is 2425.5 cm³. Find its radius.
- The volume of a sphere is 4851 cm^3. Find its radius. (Use π = 22/7)
- Area of four walls of a room with length 5m, breadth 4m, and height 3m is: