what is? the perimeter of a rectangle parking lot is 210m. the width is three fourths the length. what are the dimensions of the parking lot?

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The way to tackle this problem is to set up the equations. If the lot is a rectangle, it has 4 sides, and the opposite sides are equal. So to get the perimeter you can just add the sides. Let's call the long sides "l" length and the short sides "w" for width. Then the perimeter is just P=2l+2w. If the width is 3/4 of the length, then you can substitute (3/4)l in for w, and you get P=2l+2*(3/4)l=210. I bet you can solve it from there.