a cylindrical jar has a diameter of 9 in and height of 12 in. The water surface is 2.5 in from the top. About how much water is in the jar? use 3.14 for n.
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OpenStudy (saylilbaby):
@Ria23
OpenStudy (dan815):
thats not for n that is for pi
OpenStudy (dan815):
bu nice lol.. n does look close to \[\pi\]
OpenStudy (saylilbaby):
what ???? that is the question @dan815 i need help solving it
OpenStudy (dan815):
what do u have so far
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OpenStudy (saylilbaby):
nun @dan815
OpenStudy (dan815):
okay start with a drawing
OpenStudy (saylilbaby):
@TheSmartOne
OpenStudy (saylilbaby):
@haleyelizabeth2017
OpenStudy (dan815):
do some work
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OpenStudy (dan815):
|dw:1417492960177:dw|
Directrix (directrix):
Because the base is a circle, the formula can be written as:
V = pi * r^2 * h
The height of the cylinder is 12 but the water volume which you are asked to find has a height of (12 - 2.5).
So, you will need to crank out:
V = pi * (4.5)^2 * 9.5 and approximate pi by 3.14.
Note that the base radius is 4.5 because the radius of a circle is one-half of its diameter.
@Saylilbaby