The horizontal cross section of a cylinder is

The vertical cross section of a cylinder is

If ‘d’ is the diameter of a sphere, then its volume is …………

In what ratio are the volumes of a cylinder, a cone and a sphere, if each has the same diameter and same height

The surface area of a sphere  whose diameter is 4 cm is……………

The radius of a hemisphere is 7 cm, then its surface area is ………….. $c{m}^{2}cm^2$

The internal and external radii of a hemispherical bowl are $r_{1}r\_1$ and $r_{2}r\_2$ respectively. Then the surface area of the bowl is ………

If the radius of a cylinder is doubled and its height remains unchanged, then its curved surface area is increased by times.

If a cone and a hemisphere have equal radii and heights then the ratio of its volumes is …………

From a wooden cube of side X cm, a right circular cylinder of maximum volume is cut. Then the volume of this cylinder is ………………. $c{m}^{3}cm^3$