Surface Areas a...

The radius of the cylinder whose lateral surface area is $$704\ cm^{2}$$ and height $$8\ cm$$, is ___________.

Find the total surface area of a cylinder with diameter of base $$7\ cm$$ and height $$40\ cm$$.

If the radius of a sphere is doubled, then its volume is increase by __________.

If the radius of a sphere is increased by $$2$$cm, then its surface area increases by $$352cm^2$$. The radius of the sphere before the increase was _________.

The largest sphere is cut off from a cube of side $$5\ cm$$. The volume of the sphere will be __________.

Calculate the surface area of a sphere whose radius is $$21 cm$$.

If the volume of a sphere is divided by its surface area, we obtain 27 cm. The radius of the sphere is 

The total surface area of a sphere is, $$154\ { cm }^{ 2 }$$. Its radius is 3.5 cm. Find its volume.

The volume of a sphere is $$\dfrac {88}{21}\times (14)^{3} cm^{3}$$. The curved surface of the sphere is (Take $$\pi = \dfrac {22}{7}$$).

The number of balls of radius $$1$$ cm that are made from a solid sphere of radius $$4$$ cm