Mensuration Test - 9

The dimension of a metallic cuboid are  100cm × 80cm × 64cm . It is melted and recast into a cube. Find the surface area of the cube.

The length of a cold storage is double its breadth. Its height is 3 meters. The area of its four walls (including doors) is 108m². Find its volume.

The diameter of the base of a right circular cylinder is 42 cm and its is 10 cm. Find its total surface area,

In a temple, there are 25 cylindrical pillars. The radius of each pillar is 28 cm and height 4 m. Find the total cost of painting its outer surface at Rs 8 per m².

The curved surface area of a right circular cylinder of height 14 cm is 88cm². The diameter of its base is

The radii of two right circular cylinders are in the ratio 2: 3 and their heights are in the ratio 5:4 calculate the ratio of their curved surface areas.

A road roller takes 750 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 91 cm and length is 1.25 m.

An iron pipe 20 cm long has exterior diameter equal to 25 cm. If the thickness of the pipe is 1 cm, then find the whole surface area of the pipe.

The lateral surface area of a hollow cylinder is 4224 cm². It is cut along its height to form a rectangular sheet of width 32 cm. Find the perimeter of rectangular sheet.