Stanley is building a rectangular fence with 44 feet of fencing. If the width is two less than half the length, what is the width of the fence?

Write an equation and solve.

A. [tex]\(4l + 4 = 44; \quad 10\)[/tex]
B. [tex]\(4l + 4 = 44; \quad 12\)[/tex]
C. [tex]\(3l - 4 = 44; \quad 16\)[/tex]
D. [tex]\(3l - 4 = 44; \quad 6\)[/tex]



Answer :

Certainly! To solve this problem, we need to set up and solve an equation based on the given conditions.

Let's designate the length of the fence as [tex]\( l \)[/tex] and the width as [tex]\( w \)[/tex].

1. According to the problem, the width is two less than half the length. We can write this relationship as:
[tex]\[ w = \frac{l}{2} - 2 \][/tex]

2. The total perimeter of the rectangular fence is 44 feet. The perimeter [tex]\( P \)[/tex] of a rectangle is calculated using the formula:
[tex]\[ P = 2l + 2w \][/tex]
Given [tex]\( P = 44 \)[/tex], we have:
[tex]\[ 2l + 2w = 44 \][/tex]

3. Substitute the expression for [tex]\( w \)[/tex] from the first step into the perimeter equation:
[tex]\[ 2l + 2\left(\frac{l}{2} - 2\right) = 44 \][/tex]

4. Simplify the equation:
[tex]\[ 2l + l - 4 = 44 \][/tex]
[tex]\[ 3l - 4 = 44 \][/tex]

5. Add 4 to both sides to isolate the term involving [tex]\( l \)[/tex]:
[tex]\[ 3l - 4 + 4 = 44 + 4 \][/tex]
[tex]\[ 3l = 48 \][/tex]

6. Divide both sides by 3 to solve for [tex]\( l \)[/tex]:
[tex]\[ l = \frac{48}{3} \][/tex]
[tex]\[ l = 16 \][/tex]

So, the length [tex]\( l \)[/tex] is 16 feet.

7. Using the length, find the width using the relationship [tex]\( w = \frac{l}{2} - 2 \)[/tex]:
[tex]\[ w = \frac{16}{2} - 2 \][/tex]
[tex]\[ w = 8 - 2 \][/tex]
[tex]\[ w = 6 \][/tex]

So, the width [tex]\( w \)[/tex] is 6 feet.

Given the equations and solving process, the correct match is:
[tex]\[ 3l - 4 = 44 ; 16 \][/tex]

Therefore, the width of the fence is 6 feet.