Answer:
Pretty Simple!
Step-by-step explanation:
First, what you have to know is that the formula for the area of a rectangle is:
[tex]LW=A[/tex]
(Length times Width equals the Area.)
Knowing this, we can input 100yd^2 into the equation.
[tex]LW=100[/tex]
Also, we know that the Length is equal to four times the Width.
Meaning that, we can substitute L with 4W.
Thus:
[tex]4W^{2}=100[/tex]
So, all we have to do now is solve!
[tex]W=5[/tex]
Now, multiply that by 4, and we get 20:
[tex]L=20[/tex]
That's it!
Happy Algebra/Geometry!
