# NCERT Class 9 Solutions: Surface Areas and Volumes (Chapter 13) Exercise 13.5 – Part 2 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Q-5 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 .

Q-6 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.

Q-7 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