Question 359939: the length of a retangle is 3 cm more than twice the width. if the perimeter is 84 cm find the dimensions Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! the length of a rectangle is 3 cm more than twice the width. if the perimeter is 84 cm find the dimensions
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Let the width be "w".
Then length = 2w+3.
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Equation:
P = 2(length + width)
84 = 2(2w+3+w)
42 = 3w+3
39 = 3w
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w = 13 cm (width)
length = 2*13+3 = 29 cm
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Cheers,
stan H.
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