Subject Experts Solutions for Chapter: Volume and Surface Area, Exercise 1: Volume and Surface Area

A hall is $15 \mathrm{m}$ long and $12 \mathrm{m}$ broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, the volume of hall is:

$66$ cubic centimetres of silver is drawn into a wire of $1$ mm in diameter. The length of the wire in metres will be:

A hollow iron pipe is $21\mathrm{cm}$ long and its external diameter is $8 \mathrm{~cm}$. If the thickness of the pipe is $1\mathrm{cm}$ and iron weighs $8 \mathrm{g}/{\mathrm{cm}}^3$, then the weight of the pipe is:

$50$ men took a dip in a water tank $40 \mathrm{m}$ long and $20 \mathrm{m}$ broad on a religious day. If the average displacement of water by a man is $4 {\mathrm{m}}^3$,  then the rise in the water level in the tank will be

A cistern $6 \mathrm{m}$ long and $4 \mathrm{m}$ wide, contains water up to a depth of $1 \mathrm{m} 25 \mathrm{cm}$. The total area of the wet surface is _____.

A metallic sheet is of rectangular shape with dimensions $48 m x 36 m$. From each of its corners, a square is cut off so as to make an open box. If the length of the square is $8$ m, the volume of the box (in m³) is:

How many bricks, each measuring $25 \mathrm{cm}\times 11.25 \mathrm{cm}\times 6 \mathrm{cm}$, will be needed to build a wall of $8 \mathrm{m}\times 6 \mathrm{m}\times 22.5 \mathrm{cm}$?