Question 984656: the length of a rectangle is twice that of its width. if the area of the rectangle is 72 square inches. then find the length and width. for the problem given above, identify two variables, and state what the variable represent, write two equations using the information above and the two variables, solve using substitution or elimination, explain in detail all the steps in the solution and clearly identify your solution.
Answer by Cromlix(4381)   (Show Source):
You can put this solution on YOUR website! Hi there,
Make the width = 'x'
Length = 2x
Area = length x width
72 = 2x *(x)
72 = 2x^2
x^2 = 72
x^2 = 72/2
x^2 = 36
x = sqrt36
x = 6.
Width = 6 inches
Length = 12 inches
Hope this helps:-)
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