The lateral surface area of a hollow cylindrical jar is $4480 {\mathrm{cm}}^2$. It is cut along its height and formed into a rectangular sheet of width $35 \mathrm{cm}$. If the perimeter of the rectangular sheet is $k \mathrm{cm}$, find the value of $k$

A road roller takes $800$ complete revolutions to move once over to level a road. Find the area of the road in ${\mathrm{m}}^2$, if the diameter of a road roller is $98 \mathrm{cm}$ and the length is $2 \mathrm{m}$.

A company packs its milk powder in a cylindrical container whose base has a diameter of $2 \mathrm{cm}$ and height $40 \mathrm{cm}$. The company places a label around the surface of the container (as shown in the figure ). If the label is placed $4 \mathrm{cm}$ from the top and the bottom, then what is the area of the label in ${\mathrm{cm}}^2$?  Take $\mathrm{\pi }=3.14$.

The amount of space occupied by a $3-\mathrm{D}$ object is called its _____.

$1 {\mathrm{cm}}^3=1 \mathrm{cm}\times 1 \mathrm{cm}\times 1 \mathrm{cm}=10 \mathrm{mm}\times 10 \mathrm{mm}\times 10 \mathrm{mm}=$ _____ ${\mathrm{mm}}^3$.

$1 \mathrm{cubic} \mathrm{m}=1 \mathrm{m} \times 1 \mathrm{m}\times 1 \mathrm{m}=$ _____ ${\mathrm{cm}}^3$.

$1 {\mathrm{mm}}^3=1 \mathrm{mm}\times 1 \mathrm{mm}\times 1 \mathrm{mm}=$ _____ ${\mathrm{cm}}^3$.

The volume of a room is _____ than the volume of an almirah kept inside it. (greater/smaller)

To find the volume of a cube, we use _____ unit. $\left(\mathrm{Square} / \mathrm{Cubic}\right)$