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RS Aggarwal Solutions Class 9 Mathematics Solutions for Volume And Surface Area Of Solids Exercise 15C in Chapter 15 - Volume And Surface Area Of Solids
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A conical pit of diameter 3.5m is 12m deep. What is its capacity in kilolitres?
Answer:
ANSWER:
It is given that
The diameter of the conical pit = 3.5m
Radius of the conical pit = 3.5/2 = 1.75m
Depth of the conical pit = 12m
We know that
The volume of the conical pit = 1/3 πr2h
By substituting the values
The volume of the conical pit = 1/3 × (22/7) × 1.752 × 12
On further calculation
Volume of the conical pit = 38.5 m3 = 38.5 kilolitres
Therefore, the capacity of the conical pit is 38.5 kilolitres.
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