Hemisphere

 Find the volume of a sphere whose circumference is $144$ units?

Find the Total surface area of a hollow hemisphere whose outer and inner radii are given as  $4·2$ cm and$1·4$ cm respectively.

Find the curved surface area of a hollow hemisphere whose outer radii is $6·1$cm.

The outer radius of a hollow hemisphere is $15 \mathrm{cm}$ and its inner radius is $11 \mathrm{cm}$. Find the total surface area of the hollow hemisphere in square centimetres.

Write your answer up to two decimals and consider $\mathrm{\pi }=\frac{22}{7}$.

The outer radius of a hollow hemisphere is $16 \mathrm{cm}$ and its inner radius is $12 \mathrm{cm}$. Find the total surface area of the hollow hemisphere in square centimetres.

Write your answer up to two decimals and consider $\mathrm{\pi }=\frac{22}{7}$.

The outer radius of a hollow hemisphere is $10 \mathrm{cm}$ and its inner radius is $8 \mathrm{cm}$. Find the total surface area of the hollow hemisphere in square centimetres.

Write your answer up to two decimals and consider $\mathrm{\pi }=\frac{22}{7}$.

The outer radius of a hollow hemisphere is $22 \mathrm{cm}$ and its inner radius is $18 \mathrm{cm}$. Find the total surface area of the hollow hemisphere in square centimetres.

Write your answer up to two decimals and consider $\mathrm{\pi }=\frac{22}{7}$.

The outer radius of a hollow hemisphere is $20 \mathrm{cm}$ and its inner radius is $16 \mathrm{cm}$. Find the total surface area of the hollow hemisphere in square centimetres.

Write your answer up to two decimals and consider $\mathrm{\pi }=\frac{22}{7}$.

The outer radius of a hollow hemisphere is double the inner radius then the curved surface area is 

The outer radius of a hollow hemisphere is double the inner radius and the curved surface area is $396 {\mathrm{cm}}^2$. Find the outer radius and inner radius of the hollow hemisphere.

The outer radius of a hollow hemisphere is $14 \mathrm{cm}$ and the curved surface area of the hollow hemisphere is $924 {\mathrm{cm}}^2$. Find the inner radius of the hollow hemisphere.

The outer radius of a hollow hemisphere is $28 \mathrm{cm}$ and its inner radius is $14 \mathrm{cm}$. Find the curved surface area of the hollow hemisphere.

The external curved surface area and the internal curved surface area of a hollow hemisphere are $44 {\mathrm{m}}^2$ and $33 {\mathrm{m}}^2$. And the area of the base of the hollow hemisphere is $27 {\mathrm{m}}^2$. Find the total surface area of the hollow hemisphere.

The outer radius of a hollow hemisphere is twice its inner radius and its outer radius is $4 \mathrm{m}$. Find the total surface area of the hollow hemisphere.

The outer radius of a hollow hemisphere is twice its inner radius and the outer radius of the hollow hemisphere is $4 \mathrm{cm}$. Find the total surface area of the hollow hemispheres in which the outer radius of the hollow hemisphere is twice its inner radius to hollow hemisphere in which the outer radius of the hollow hemisphere is thrice its inner radius.

The outer radius of a hollow hemisphere is $7 \mathrm{m}$ and inner radius of the hollow hemisphere is $3.5 \mathrm{m}$. Find the total surface area of the hollow hemisphere.

The outer radius of a hollow hemisphere is $14 \mathrm{cm}$ and inner radius of the hollow hemisphere is $7 \mathrm{cm}$. Find the total surface area of the hollow hemisphere. $\left(\text{Use} \mathrm{\pi }=\frac{22}{7}\right)$

The outer radius of a hollow hemisphere is $28 \mathrm{cm}$ and the curved surface area of the hollow hemisphere is $2156 {\mathrm{cm}}^2$. Find the inner radius of the hollow hemisphere.

The outer radius of a hollow hemisphere is twice its inner radius. The outer radius of another hollow hemisphere is thrice its inner radius. Find the ratio of the curved surface area of the hollow hemispheres in which the outer radius of the hollow hemisphere is twice its inner radius to hollow hemisphere in which the outer radius of the hollow hemisphere is thrice its inner radius.

The outer radius of a hollow hemisphere is $7 \mathrm{m}$ and its inner radius is $3.5 \mathrm{m}$. Find the curved surface area of the hollow hemisphere.