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Math Forum » Discussions » Math Topics » geometry.pre-college.independent

Topic: Geometry Area Question Help
Replies: 1   Last Post: Sep 11, 2007 6:37 PM

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Kirby Urner

Posts: 4,709
Registered: 12/6/04
Re: Geometry Area Question Help
Posted: Sep 11, 2007 6:37 PM
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> Hey I have no clue on how to solve this problem. any
> help will be great!
>
>
>
> Find the area ....
>
> a rectangle with side lengths of 2a/5b units and 3b/8
> units.
>
> Thanks!


Just multiply them together per the standard
geometric model of multiplication (rectilinear):

2a/5b * 3b/8 == (2a*3b)/(5b*8) == 6ab/40b == 3a/20.

Note that the result really only depends on a's value.

Also, we're assuming same "units" for both edges.

Kirby



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