Mensurationhard · Past Paper
The total surface area of a prism with an equilateral triangular base of side 'a' and height 'h' is:
A3ah + (sqrt(3)/4)a²
B3ah + (sqrt(3)/2)a²
Cah + (sqrt(3)/4)a²
D2ah + (sqrt(3)/2)a²
✓ Correct Answer: B — 3ah + (sqrt(3)/2)a²
TSA = LSA + 2 * Base Area = (3a)h + 2 * (sqrt(3)/4)a² = 3ah + (sqrt(3)/2)a².
Share this question
More from Mensuration
- The area of the largest triangle that can be inscribed in a semi-circle of radius r is:
- Find the area of a metal sheet required to make a hollow pipe of length 1m and radius 7cm.
- If the sides of a triangle are in the ratio 3:4:5 and its perimeter is 36 cm, find its area.
- What is the volume of a hemisphere if the area of its base is 154 cm^2?
- Find the area of a square field whose side length is 12 meters.