Area And Volume...

The lateral surface area of a right circular cylinder with base radius 7 cm and height 20 cm is

Ratio of volumes of two cones with same radii is

A right circular cone is given a height of 6 cm and its semi vertical angle is 30°. Find its volume.

A cylinder of the maximum possible size is made out of a solid wooden cube with each side 20 cm. What percentage of material (approx.) is left in this process?(Take π = 3.14)

Ratio of volumes of two cones with the same height is

Ratio of curved surface areas of two cylinders with different radii R and r; but equal height is

Ratio of volumes of two cylinders with equal height is

The area of the base of a cone is 1386 sq cm. Its height is 28 cm. Its total surface area is

Ramesh cuts a semi-circle of radius 4 cm from a piece of paper and then folds it in such a way that it forms a cone. What is the volume of the cone so formed?

A circular disc of area 0.49m² rolls down a length of 1.76 km. What is the number of revolutions it makes?

The ratio of the radius of the base to the height of a cone is 5 : 12. If the cost of smoothening the curved surface area (CSA) is Rs. 115.50 at a rate of 5 paise per sq. cm, then what is the total surface area of the cone?

Ratio of curved surface areas of two cylinders with heights H and h respectively and having equal radii is

The ratio of volumes of two cylinders with heights H and h respectively and having equal radii (R = r) is

The cost of painting the curved surface area of cone is Rs. 35.20 at 5 paise per cm². What will be the approximate height of the cone if its slant height is 25 cm?

The radius of the base of a right circular cone is 6 cm and its slant height is 28 cm. The curved surface area of the cone is

A copper sphere of diameter 18 cm is melted and converted into a wire of diameter 4 mm. The length of the wire (in metres) is

A vessel of solid cyllinderical shape, having volume of 33.264 litres is casted into a conical shape. If its height is 72 cm, what is the cost of painting its CSA at Rs. 12 per sq m?

The base radius of a cylinder is 2 times its height. The cost of painting its CSA at 4 paise/cm² is Rs. 100. The volume of the cylinder is approximately

The lateral surface area of a cylinder is 220 sq. cm with height 7 cm. Its volume is

Thirty buckets of lime are used to form a conical heap. Each bucket has a radius of 14 cm and a height of 15 cm. If the base area of the conical heap is 5544 cm², the area of canvas required to cover it is