jakemanzi jakemanzi

11-05-2020
Mathematics

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List the measurements of three different rectangular prisms that each have a surface area of 20 square units.

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gordonj2016 gordonj2016

14-05-2020

So we can use the formula 2lw +2wh+ 2lh, which is the surface area formula and we can set that to equal 20. 2lw +2wh+ 2lh=20

lw+wh+lh= 10

Let’s isolate L

Lw+Lh=10-wh

Let’s distribute L

L(w+h)=10-wh

L=(10-wh)/(w+h)

You can use this formula to plug in values for w and h and it will work as long as their products are less than 10

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