S K Gupta and Anubhuti Gangal Solutions for Chapter: Volume and Surface Area of Solids, Exercise 2: Exercise 22(B)

If $60 {\mathrm{cm}}^3$ of a metal weighs $1 \mathrm{kg}$, find the weight of a block (in $\mathrm{kg}$) of the same metal of the size $20 \mathrm{cm}$ by $12 \mathrm{cm}$ by $5 \mathrm{cm}$.

In a shower, 5 cm of rain falls. Find the volume of water that falls on 2 hectares of ground.

A river $2 \mathrm{m}$ deep and $45 \mathrm{m}$ wide is flowing at the rate of $3 \mathrm{km}$ per hour. Find the amount of water that runs into the sea per minute.(in ${\mathrm{m}}^3$).

A beam $9 \mathrm{m}$ long, $50 \mathrm{cm}$ wide, and $20 \mathrm{cm}$ deep is made of wood which weighs $30 \mathrm{kg} \mathrm{per} {\mathrm{m}}^3$, find the weight of the beam.

A wooden box(including the lid) has external dimensions of $40 \mathrm{cm}$ by $34 \mathrm{cm}$ by $30 \mathrm{cm}$. If the wood is $1 \mathrm{cm}$ thick, how many ${\mathrm{cm}}^3$ of wood are there in it?

The outer dimensions of a closed wooden box are $10 \mathrm{cm}$ by $8 \mathrm{cm}$ by $7 \mathrm{cm}.$ Thickness of the wood is 1 cm.Find the total cost of wood required to make the box if $1 {\mathrm{cm}}^3$ of wood costs $₹2.$

$500$ men took dip in a tank which $80 \mathrm{cm}$ long, $50 \mathrm{m}$broad. What is the rise in water level if the average displacement of water by a man is $4 {\mathrm{m}}^3$?

The three co-terminous edges of a cuboid are $36, 75 \mathrm{and} 80 \mathrm{cm}$ respectively. The edge of the cube of the same volume will be