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Mathematics 13 Online
OpenStudy (anonymous):

(Sorry I'm terrible at math) http://prntscr.com/8wec5k

OpenStudy (anonymous):

2l+2w

OpenStudy (anonymous):

There is two lengths to a rectangle and two widths. To find the perimeter you need to add all of them.

OpenStudy (babylove18):

l+l+W+W c 2L+2W

OpenStudy (anonymous):

Thanks for helping me explain that @babylove18

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