Frustum of Cone

An oil funnel of tin sheet consists of a cylindrical portion 10 cm long attached to a frustum of cone. The diameters of the top and bottom of the frustum are 18 cm and 8 cm respecti8vely. If the slant height of the frustum of the cone is 13 cm, find the area of the tin required to make the funnel from the given information in the figure (pi=3.14)

An open metal bucket is in the shape of a frustum of cone of height 21 cm with radii of its lower and upper ends are 10 cm and 20 cm respectively. Find the cost of milk which can completely fill the bucket at the rate of रु 40 per litre.

Frustum Of A cone|Surface Area Of Frustum Of A Cone|NCERT Exercise Questions

Derive the formula for the volume of the frustum of a cone.

A right circular cone is sliced into a smaller cone and a frustum of a cone by a plane perpendicular to its axis. The volume of the smaller cone and the frustum of the cone are in the ratio 64 : 61. Then their curved surface areas are in the ratio

Frustum of a cone: formation and formulas ( slant height: volume: CSA: TSA)

Derive the formula for the curved surface area and total surface area of the frustum of a cone.

A tent consists of a frustum of a cone capped by a cone. If the radii of the ends of the frustum be 13 m and 7 m, the height of the frustum be 8 m and the slant height of the conical cap be 12 m, find the canvas required for the tent.

If r_1 and r_2 denote the radii of the circular bases of the frustum of a cone such that r_1> r_2 , then write the ratio of the height of the cone of which the frustum is a part to the height of the frustum.