Subject Experts Solutions for Chapter: Mensuration, Exercise 3: Worksheet 3

Find the total surface area of the cuboid in ${\mathrm{cm}}^2.$

Find the surface area of the cube in ${\mathrm{cm}}^2.$

Find the lateral area of the cube in ${\mathrm{cm}}^2.$

Find the total surface area of the cylinder in ${\mathrm{cm}}^2.$

Find the total surface area of the cylinder in ${\mathrm{cm}}^2.$ Take $\mathrm{\pi }=3.14.$

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 $\mathrm{\pi }=3.14$.