SOLUTION: A rectangle is four times as long as it is wide. If the area of the rectangle is 1600 cm squared, what are its dimensions?
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Question 721997: A rectangle is four times as long as it is wide. If the area of the rectangle is 1600 cm squared, what are its dimensions?
Answer by MithrilKnights(8) (Show Source): You can put this solution on YOUR website!
We let the length be 4x
Let the width be x
So, 4x*x = 1600 cm^2
So, 4x^2 = 1600
So, x^2 = 400 and x=20
Therefore, plugging them into the previous lengths we get,
4x = 80
x = 20
So the dimensions are 80 x 20.
And 80 x 20 = 1600, which works
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