Mensurationmedium · Past Paper
What is the cost of painting the curved surface of a cylinder with radius 7 m and height 10 m at the rate of Rs. 5 per sq. m?
ARs. 2200
BRs. 440
CRs. 1100
DRs. 2100
✓ Correct Answer: A — Rs. 2200
CSA = 2 * (22/7) * 7 * 10 = 440 sq. m. Cost = 440 * 5 = Rs. 2200.
Share this question
More from Mensuration
- A square is inscribed in an equilateral triangle of side 12 cm. Find the area of the square.
- A cylindrical pillar has a radius of 21 cm and height of 4 m. Find its volume.
- A cylinder and a cone have the same radius and same height. What is the ratio of the volume of the cylinder to the volume of the cone?
- If the side of a cube is 1.2 m, its volume is:
- Find the volume of a cylinder whose base area is 154 cm² and height is 10 cm.