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Mathematics 9 Online
OpenStudy (anonymous):

the perimeter of a triangle is 8ft,10in.the lengths of two sides are 3ft,8in and 2ft,9in.find the length of the third side

OpenStudy (alyssa_xo):

the perimeter of a triangle is equal to the sum of all 3 side lengths. you have x+y+z=P you have the perimeter and 2 side lengths. plug it in and zolve

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