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 Question from Joe, a student: i have a math question for homework that i don't understand. can you draw a rectangle that has 18cm in perimeters and 20cm in areas. i tried but i can't.

Hi Joe,

The length plus the width is the distance half way around the rectangle so

$\mbox{length } + \mbox{ width } = 9.$

The area of a rectangle is the length times the width so

$\mbox{length } \times \mbox{ width } = 20.$

Hence the question is asking, do you know two number with their sum equal to 9 and their product equal to 20.

Penny

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