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- Re:Help with some maths Please?

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Super Contributor

31-07-2009 10:58 PM

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47 REPLIES 47

Not applicable

01-08-2009 12:18 AM

How to Measure a Cylinder

Radius=r

pi = 3.14259 (approx.)

Area=A

Height=h

Volume=v

First calculate the area of the circle: A=pi*r*r

Then multiply by the height to attain volume: v = A*h = pi*r*r*h

in your case the volume will be = 3017.1428571428546 cubic mm

I am sure you can play with the formula to see what diameter you will need for 45 mm height. But my best (closest) calculation will be about 9.24mm

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Frequent Contributor

01-08-2009 07:20 AM

john u doing a gr 9 maths examination?

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Super Contributor

01-08-2009 10:29 AM

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Super Contributor

01-08-2009 10:39 AM

It's too small...Small bottle of whiskey then.

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Super Contributor

01-08-2009 03:27 PM

CPS your answer is correct.

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Super Contributor

02-08-2009 07:44 PM

Thanks Very Much Guys This is very helpfull.

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Not applicable

03-08-2009 09:29 AM

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Frequent Contributor

03-08-2009 09:33 AM

take note that the optimal diameter and height will require 2nd derivative calcualtions. regards

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Not applicable

03-08-2009 09:54 AM

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Contributor

03-08-2009 10:34 AM

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Not applicable

03-08-2009 10:44 AM

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Super Contributor

03-08-2009 10:47 AM

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Super Contributor

03-08-2009 10:51 AM

That is the equation I use to make me rich! Can't go wrong with it! ;)

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Super Contributor

03-08-2009 10:52 AM

An engineer told me before he died uh hum, uh hum.....

He knew a cylinder that was so wide, uh hum, uh hum ...

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Super Contributor

03-08-2009 10:58 AM

at this moment i'm kinda glad,i've invented nuthin!

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Contributor

03-08-2009 10:59 AM

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Super Contributor

03-08-2009 11:15 AM

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Not applicable

03-08-2009 11:18 AM

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Super Contributor

03-08-2009 11:35 AM

You are...The `Chartist' of Physics!!! :)

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