Re: How do I do this (Math)

Posted by RAB on May 20, 2006 at 11:10:40 from (195.93.21.6):

In Reply to: How do I do this (Math) posted by BUDD on May 20, 2006 at 08:13:29:

Budd,

You start with:

Mass = volume*density,

so, Volume = Mass/Density.

Your mass is 18lb, so your volume is:

18lbs/density

Now you know the volume you can work out from

Volume = length*width*thickness

to find the unknown (you measure the thickness and the length (from front to back)) you rearrange to find width, so:

Volume/(length*thickness) = width

Now you know from the first equation that the Volume is 18/density, so

(18/density)/(length*thickness) = width

Easy when you do it in simple stages, but make sure all your units are the same (don"t mix feet with inches or metres or anything else)

Regards, RAB

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