1.

A conical pit of diameter 3.5m is 12m deep. What is its capacity in kilolitres?

Answer»

It is given that

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

Volume of the conical pit = 1/3 πr2h

By substituting the values

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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