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jjsavage06
20.07.2019 •
Mathematics
(08.02 mc) a grain silo is shown below: grain silo formed by cylinder with radius 6 feet and height 168 feet and a half sphere on the top what is the volume of grain that could completely fill this silo, rounded to the nearest whole number? use 22 over 7 for pi.
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Ответ:
19460 cubic feet
Step-by-step explanation:
Since we are given that Grain silo is formed by cylinder and a half sphere on top
We are required to find the volume of grain that could completely fill this silo
Formula of volume of cylinder :![\pi r^{2}h](/tpl/images/0111/8312/03351.png)
Since we are given that the cylinder with which the silo is formed has height 168 feet and radius 6 feet
So, r = 6 feet
h = 168 feet
use π =22/7
Substituting these values in formula
Volume of cylinder![= \frac{22}{7}*(6)^{2} * 168](/tpl/images/0111/8312/6d2c4.png)
Thus the volume of cylinder is 19008 cubic feet.
Now since the silo is fomed of half sphere also
Formula of volume of sphere![=\frac{4}{3} \pi r^{3}](/tpl/images/0111/8312/2bf1e.png)
Volume of half sphere![=\frac{\frac{4}{3}}{2} \pi r^{3}](/tpl/images/0111/8312/53699.png)
Since r = 6 feet
So, volume of half sphere![=\frac{2}{3} * \frac{22}{7}*(6)^{3}](/tpl/images/0111/8312/e3c66.png)
Thus the volume of half sphere is 452.57 cubic feet.
Thus the volume of the grain = volume of cylinder +volume of half sphere
=19008+452.57
=19460.57 cubic feet
Hence the volume of grain that could completely fill this silo is 19460 cubic feet ( rounded to the nearest whole number )
Ответ:
The ratio of trucks to vans should be 3:7