Question

The circumference of the base of a 12m high conical tent is 66m find the volume of air contained

Answer 1

circumference =66m

$2\pi \: r = 66 \\ r = \frac{21}{2} m$

volume of cone=1/3×pie×radius^2×height

=1/3×22/7×(21/2)^2×12

=11×21×6

=1386m^3

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