Sphere

A cylinder and a sphere of equal radii and are of equal heights, then find the ratio of their volumes.

"The total surface area (TSA) of a sphere is $16\pi$ sq.units and the TSA of a hemisphere with same radius is $8\pi$ sq.units." Do you agree with this statement? Justify your answer with a reason.

If the surface area of a sphere is$\left(144\mathrm{\pi }\right) {\mathrm{m}}^2$ then its volume is

The volume of sphere is $38808 {\mathrm{cm}}^3$. Its curved surface area is [Use $\mathrm{\pi }=\frac{22}{7}$]

The hemisphere has only one surface which is flat.

The hemisphere has one curved surface and one flat surface.

The surface of a hemisphere is curved.

A hemisphere has two surfaces.

How many surface does a hemisphere have?

In the diameter a hemispherical igloo is given. Its outer radius is $200 \mathrm{cm}$. Its total surface area is _____ $\mathrm{\pi }$ ${\mathrm{cm}}^2$

Find the value of $a$ if the total surface area of a hemisphere of radius $10 \mathrm{cm}$ is $a {\mathrm{cm}}^2$. $\left(\mathrm{Use} \mathrm{\pi }=3.14\right)$

If the surface area of a sphere of diameter $3.5 \mathrm{m}$ is $k \mathrm{m}{ }^2$, find the value of $k$. $\left(\mathrm{Use} \mathrm{\pi }=\frac{22}{7}\right)$

If the surface area of sphere of radius $14 \mathrm{cm}$ is $k {\mathrm{cm}}^2$, find the value of $k$. $\left(\mathrm{Use} \mathrm{\pi }=\frac{22}{7}\right)$

If the surface area of sphere of radius $5.6 \mathrm{cm}$ is $k {\mathrm{cm}}^2$. 

Then find the value of $k$.

$\left(\mathrm{Use} \mathrm{\pi }=\frac{22}{7}\right)$

If the surface area $\left(\mathrm{in} {\mathrm{cm}}^2\right)$ of sphere of radius $10.5 \mathrm{cm}$ is $k {\mathrm{cm}}^2$, find $k$ $\left(\mathrm{Use} \mathrm{\pi }=\frac{22}{7}\right)$.

Which of the following is the formula for the volume of a sphere of radius ‘r’?

Rohan dropped 10 identical steel balls into a cylindrical container of radius 6 cm and the level of water in the container rose from 14 cm to 24 cm.

What is the volume of one steel ball?

Rohan dropped 10 steel balls into a cylindrical container of radius ‘r’ cm and the level of water in the container rose from $ {h}_{1}$ cm to $ {h}_{2}$ cm.

Which of these formulae gives the volume of 10 steel balls?

The volume of a spherical balloon is increased by 33.1%.

Which of these is the percentage increase in its radius?