Surface Areas a...

If the curved surface area of a solid right circular cylinder of height $$h$$ and radius $$r$$ is one-third of its total surface area, then

A hemispherical bowl is made of steel, $$0.25cm$$ thick. The inner radius of the bowl is $$5cm$$. Find the outer curved surface area of the bowl.

Find the surface area of sphere of diameter $$14$$ cm.

Find the volume of a sphere whose radius is $$0.63m$$

Find the amount of water displaced by a solid spherical ball of diameter $$28cm$$.

Find the surface area of a sphere of radius $$14$$ cm.

Find the total surface area of a hemisphere of radius $$10$$ cm. (Use $$\pi =3.14$$)

Find the radius of a sphere whose surface area is $$154{cm}^{2}.$$

It costs Rs.$$2200$$ to paint the inner curved surface of a cylindrical vessel $$10\ m$$ deep. If the cost of painting is at the rate of Rs.$$20$$ per $${m}^{2}$$.Find Inner curved surface area of the vessel.

A match box measures $$4\ cm\times 2.4\ cm\times 1.5\ cm$$. What will be the volume of a packet containing $$12$$ such boxes?