Hi Sophia;
Our first priority is to establish the volume of the cylinder.
V=(3.14)(r^{2})(h)
3.14 is pie.
V=(3.14)(50 cm)^{2}(60 cm)
V=(3.14)(2500 cm^{2})(60 cm)
V=471000 cc
There are 1000 cc in 1 liter.
We must convert...
V=(471000 cc)(1 liter/1000 cc)
Let's cancel units where appropriate...
V=(471000 cc)(1 liter/1000 cc)
V=471 liters
12.3 l/min is the flow
We need to know minutes.
Therefore, we need to know the minutes/liters.
The inverse of 12.3 liter/min is
0.08 min/liter
(471 liters)(0.08 min/liter)
Let's cancel units where appropriate...
(471 liters)(0.08 min/liter)
37.68 minutes
Halfway=37.68 minutes/2=18.84 minutes
10/17/2013

Vivian L.
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