SOLUTION: The length of a rectangle is 3 1/2 times its width. It's perimeter is 108cm. Find it's length and width. Choices for the width: 12, 18, 24
I'm seriously stuck. My math teacher d
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Question 487981: The length of a rectangle is 3 1/2 times its width. It's perimeter is 108cm. Find it's length and width. Choices for the width: 12, 18, 24
I'm seriously stuck. My math teacher didn't teach us how to do this. He just gave us our assignment and told us it was hard.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
The length of a rectangle is 3 1/2 times its width.
It's perimeter is 108cm. Find it's length and width.
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Let the width be "x"
Then the length is (7/2)x.
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Perimeter = 2(length + width)
108 = 2((7/2)x + x)
54 = (9/2)x
x = (2/9)(54)
x = 2*6 = 12 (width)
length = (7/2)x = (7/2)12 = 7*6 = 42
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Cheers,
Stan H.
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Choices for the width: 12, 18, 24
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