The curved surface area of a right circular cone of height 15 cm and base diameter 16 cm is

If two solid hemispheres of same base radius r units are joined together along their bases, then curved surface area of this new solid is

The height of a right circular cone whose radius is 5 cm and slant height is 13 cm will be

A solid sphere of radius x cm is melted and cast into a shape of a solid cone of same radius. The height of the cone is

A shuttle cock used for playing badminton has the shape of the combination of

The height and radius of the cone of which the frustum is a part are h₁ units and r₁ units respectively. Height of the frustum is h₂ units and radius of the smaller base is r₂ units. If h₂ : h₁ = 1:2 then r₂ : r₁ is

A garden roller whose length is 3 m long and whose diameter is 2.8 m is rolled to level a garden. How much area will it cover in 8 revolutions?

The radius of a conical tent is 7 m and the height is 24 m. Calculate the length of the canvas used to make the tent if the width of the rectangular canvas is 4 m?

If the base area of a hemispherical solid is 1386 sq. metres, then find its total surface area?

The ratio of the volumes of two cones is 2 : 3. Find the ratio of their radii if the height of second cone is double the height of the first.

If the radii of the circular ends of a frustum which is 45 cm high are 28 cm and 7 cm, find the volume of the frustum.

The radius of a sphere increases by 25%. Find the percentage increase in its surface area.