John M. answered • 02/14/18

Tutor

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High School and College Science Tutor

We need to find length and width. To find two unknowns we need two equations.

**P = 2L + 2W = 34**

**L = W + 3**

**34 = 2(W + 3) + 2W**

**34 = 2W + 6 + 2W**

**28 = 4W**

**W = 7**

**L = 7 + 3 = 10**

The length is 10 inches and the width is 7 inches.