Find length and width when given the perimeter.

Question

perimeter of a cross section of a "two by four" piece of lumber is 10 inches. The length is 2" longer than the width. Find thdimensions of the cross section of a two by four.

Answer 1

Good day, Angel!

Perimeter = 2L + 2W

(2 times the length +

2 times the width)

Based on what's given:

P = 10

W = x (don't know that)

L = x+2

Set up the equation:

10 = 2x + 2(x+2)

10 = 2x + 2x + 2

10 = 4x + 2

8 = 4x

x = 2

W = 2

L = 4

Go Get Your "A"