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The width of a rectangle is 1/4 its length. What is the length of the rectangle if it's perimeter is 80 cm?

 Apr 27, 2021
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We can make 2 equations and solve for the variables.

 

Lets make l = length and w = width.

 

\(w=1/4*l\)  

\(2w+2l=80\)

 

You can plug in w = 1/4*l into the second equation, so it turns into \(2(1/4l)+2l=80\)

 

Solving for that equation, you get \(l=32\)

 

So your answer would be 

\(​​length = 32\)
 Apr 27, 2021

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