NCERT Class 9 Solutions: Surface Areas and Volumes (Chapter 13) Exercise 13.5 – Part 2
Q5 The capacity of a cuboidal tank is of water. Find the breadth of the tank, if its length and depth are respectively and
Solution:
We know that,

Length (l) ,

Depth (b) =

Volume (V)=
Since, . So, 1 liter = . Therefore, .
Volume of cube .
Q6 A village, having a population of , requires liters of water per head per day. It has a tank measuring . For how many days will the water of this tank last?
Solution:

Tank measures
Therefore,
Capacity of the tank
Water requirement per person per day liters
Water required per day for


( )

Therefore number of days the water will last
Thus, the water in tank will last for 3 days.
Q7 A godown measures . Find the maximum number of wooden crates each measuring that can be stored in the godown.
Solution:

Measure of godown

Therefore, volume of the godown =

Dimensions of each crate

Volume of 1 crates =

Assuming that the crates can fit perfectly in the godown, number of crates that can be stored = 10666.66