L Mohan Lal Solutions for Exercise 1: PREVIOUS QUESTIONS

Find the ratio of volumes of two cuboids whose length, breadths and heights are in the ratio of $3 : 7, 14 : 11$ and $22 : 9$ respectively?

The length, breadth and height of a cuboid are in the ratio $6 : 5: 4$ and its whole surface area is $33300 {\mathrm{cm}}^2$. Its height is (in centimetres)

The Length of the longest pole that can be kept in a room $5 m$ long, $4 m$ broad and $3 m$ high, is?(in meters)

How many bricks will be needed to construct a wall $4 \mathrm{m}$ long, $3 \mathrm{m}$ high and $13 \mathrm{cm}$ broad? If each brick measures $20 \mathrm{cm}\times 12 \mathrm{cm}\times 6.5 \mathrm{cm}$?

A covered wooden box has the inner measures as $115 \mathrm{cm}, 75 \mathrm{cm}$ and $35 \mathrm{cm}$ and the thickness of wood is $2.5 \mathrm{cm}$. The volume of the wood is (in $c{m}^3$).

A hall is $15 \mathrm{m}$ long and $12 \mathrm{m}$ broad. The sum of the areas of the floor and the ceiling is?(in square meters).

The surface area of a $(10 \mathrm{cm}\times 4 \mathrm{cm}\times 3 \mathrm{cm})$ brick is?(in square centimeters)