Mensurationmedium · Past Paper
The area of the base of a cone is 154 cm² and its slant height is 10 cm. Find its TSA.
A220 cm²
B374 cm²
C308 cm²
D440 cm²
✓ Correct Answer: B — 374 cm²
Base area πr² = 154 => r = 7 cm. CSA = πrl = (22/7)*7*10 = 220. TSA = 220 + 154 = 374 cm².
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.
- What is the formula for the volume of a cube with side length 's'?
- If the side of a cube is 1.2 m, its volume is:
- The area of a square is 64 sq. cm. What is the length of its side?
- Find the slant surface area of a cone with radius 7 cm and height 24 cm.