Surface Areas a...

The cost of painting a cubical box of side $3\mathrm{m}$ at the rate of $\mathrm{Rs}.2$ per sq.m is:

If the surface area of a sphere is $100\pi$ sq.cm, then its radius is

A solid cylinder of radius ‘$\mathrm{r}$’ and height ‘$\mathrm{h}$’ is placed over other cylinder of same height and radius. The total surface area of the shape so formed is

The TSA of a solid hemisphere of diameter $2cm$ is:

Two right circular cones have equal radii. If their slant heights are in the ratio 4 : 3, then their respective curved surface areas are in the ratio.

A rectangular piece of paper is $44cm$ long and $18cm$ wide. If a cylinder is formed by rolling the paper along its length, then the radius of the base of the cylinder is

If two identical solid cubes of side ‘$x$’ are joined end to end, then the TSA of the resulting solid is:

If the radius of the sphere is $2cm$, then its curved surface area is

The TSA of a solid cylinder whose radius is half of its height ‘$h$’ is equal to

If the volume of a sphere is $\frac{9}{16}\pi c{m}^3$, then its radius is

If the TSA of a solid hemisphere is $12\pi$ sq. cm, then its CSA is

If two solid hemispheres of same base radius ‘$x$’ cm are joined together along their bases, then the CSA of the new solid formed is

The curved surface area of a right circular cylinder of radius $1\mathrm{cm}$ and height $1\mathrm{cm}$ is

The CSA of a right circular cylinder whose base radius is ‘$x$’ units and height is ‘$z$’ units is

If the surface area of the sphere is same as the CSA of a right circular cylinder whose height and diameter are $12\mathrm{cm}$ each, then the radius of the sphere is: