20-04-2016
Mathematics

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The length of a rectangle is 3 cm more than twice its width. If the perimeter of the rectangle is 36 cm, find the dimensions of the rectangle.

The length of a rectangle is 3 cm more than twice its width If the perimeter of the rectangle is 36 cm find the dimensions of the rectangle class=

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ColeRees ColeRees

20-04-2016

Let's set the width as x cm

The length must be 2x + 3

2x + 3 = p

The equation can be written as 2(x) + 2(2x + 3) = 36

Simplify, solve.

2x + 4x + 6 = 36

6x = 36 - 6

6x = 30

x = 5

2x + 3 = 13

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