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the length of one side of a rectangle is 12 more than the width . the perimeter of the rectangle is 56 cm. find the length and the width of the rectangle

Answer :

bobby286
The width is 8cm and the length is 20cm.


Explanation: The length is 12 more than the width so the equation is l=12+w and Perimeter equation is P=2l +2w. You substitute l and plug in the equation.

56=2(12+w) +2w
56=24+4w
32=4w
w=8
l = 12+8=20

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