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OpenStudy (anonymous):
The length of a rectangle is 3cm greater than its width. The perimeter is 24 cm. What are the dimensions of the rectangle.
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OpenStudy (anonymous):
OK, so if it was square, the sides would be 6cm each for a perimeter of 24cm. Therefore, if the length is 3cm greater than the its width, add the 3cm to each of one side, you've got a rectangle that measures 9 x 3 x 9 x 3 which makes 24.
OpenStudy (mokeira):
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OpenStudy (anonymous):
Or, do it like that ^ which is a much better way. Nicely put @Mokeira .
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