Medal + Fan! I want a walk through and answer, not just the answer.
What is the height of this cylinder?
A 18in
B 11.3in
C 7.2in
D 3.6in
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OpenStudy (love_333):
OpenStudy (love_333):
@Mehek14 Do you happen to know how to work this?
Mehek (mehek14):
Formula =
\(\pi r^2h\\ \pi * 5^2 * h = 282.7\)
OpenStudy (marcelv):
You have to remember that the volume of the cylinder is the area times the height, since the area of the circle is given by pi times r^2, and the height is just h, we have \[ V = \pi r^2h\] From there you can replace the values of V and r, and solve for h, you will have \[h = \cfrac V{\pi r^2}\]
Mehek (mehek14):
First find \(\pi *5^2\)
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OpenStudy (love_333):
That would be 25pi
Mehek (mehek14):
Yes
You can make that 25 * 3.14 = ?
OpenStudy (love_333):
78.5
Mehek (mehek14):
Divide that with the volume
282.7/78.5 = ?
Mehek (mehek14):
This will give you the height
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OpenStudy (love_333):
3.6 is the height?
Mehek (mehek14):
Yes :)
OpenStudy (love_333):
Thank you :)
OpenStudy (love_333):
Could you see if you know my next question? @Mehek14
Mehek (mehek14):
Yw and sure :)
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OpenStudy (love_333):
Find the volume of the composite space figure (below) to the nearest whole number.
A 210cm^3
B 180cm^3
C 120cm^3
D 60cm^3