Question 996154
A conical water filter has a diameter of 60cm and a depth of 24cm. It is filled to the top with water. The water filter sits above an empty cylindrical container which has a diameter of 40cm. The water is allowed to flow from the water filter into the cylindrical container. When the water filter is empty find the height of the water in the cylindrical container. 

I know i gotta find a volume of the cone, which i got {{{ 7200(pi) }}} or {{{ 22619.5cm^3 }}}

But i am completely stuck for the cylindrical part!
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The volume of a cylinder = {{{pi*r^2*h}}}
It's the area of the base * height.
{{{Vol = pi*20^2*h = 7200pi}}}
{{{h = 7200pi/400pi = 18}}} cm
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Any object of uniform cross-section has a volume of area*height.