Respuesta :

Use the cone formula:
[tex]V = \pi r^{2} \frac{h}{3} [/tex]
And so:
[tex]Area = \pi * 150^{2} * \frac{240}{3} = 5654866.7 inches^{2} [/tex]
5654866.7 / 12000 = 471,
So the answer is 471 weeks.

Hope this helps.
irspow
V(w)=(hpr^2)/3-12000w

V(w)=(16956000-36000w)/3

V=0 when 16956000=36000w

w=471weeks

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