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A conical tank holds 38.808 litres of water. If its radius is 21 cm, find its height. (Use π = $\frac{22}{7}$ , 1 litre = $1000 cm^{3}$ )

Class 9Volume of a ConeMensuration

A84 cm
B42 cm
C63 cm
D21 cm

Step-by-Step Solution

V = 38.808 \times 1000 = 38808 cm^{3} .38808 = \frac{1}{3} (\frac{22}{7}) (441) h = (462) h \Rightarrow h = \frac{38808}{462} = 84 cm

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Answer: A) 84 cm

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