Mensurationhard · Past Paper
The total surface area of a prism whose base is a right-angled triangle is 200 sq. cm and height is 10 cm. Find the perimeter of the base if the base area is 20 sq. cm.
A16 cm
B18 cm
C20 cm
D24 cm
✓ Correct Answer: A — 16 cm
TSA = 2*Base + Perimeter*h => 200 = 2*20 + P*10 => 160 = 10P => P = 16 cm.
Share this question
More from Mensuration
- The base of a prism is a right-angled triangle with sides 3 cm, 4 cm, and 5 cm. If the height of the prism is 10 cm, find its volume.
- Find the volume of a right circular cylinder if its radius is 3.5 cm and height is 10 cm.
- What is the volume of a right prism with a height of 15 cm and a triangular base of area 20 cm^2?
- A sphere is inscribed in a cube of side 10 cm. What is the volume of the sphere?
- If the radius of a sphere is increased by 10%, what is the percentage increase in its volume?