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प्रश्न
The circumference of the base of a 12 m high conical tent is 66 m. Find the volume of the air contained in it.
उत्तर
Given, Circumference of conical tent C = 66 m
And height (h) of conical tent = 12 m.
∴ Radius = `C/(2pi)`
= `(66 xx 7)/(2 xx 22)`
= `21/2`
= 10.5 m
∴ Volume of the air contained by it
= `1/3 pir^2h`
= `1/3 xx 22/7 xx 21/2 xx 21/2 xx 12 m^3`
= 1386 m3
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