To find out canvas needed for making a tent, we measure

Geometry box is an example of

Chalk-box is an example of

If the radius of the base of a right circular cylinder is halved, keeping the height same, then the ratio of the volume of the cylinder thus obtained to the volume of the original cylinder is

The ratio of volumes of a cone and a cylinder whose radii and height are equal is

The radii of two spheres are in the ratio 2 : 3, then the ratio of their surface areas is ………

A cylinder, a cone and a hemisphere have bases of equal radii and are of equal heights. Then the ratio of their volumes is …………

Ratio between the volume of a cone and a cylinder is ……………

The ratio between the surface area of sphere and hemisphere is …………

Identify the shapes in the funnel