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James fenced in his backyard. The perimeter of his fence is 20 feet, and the width of his yard is 2 feet. Use the perimeter formula to find the length of his rectangular yard in inches:

[tex]\[ P = 2L + 2W \][/tex]

(1 foot = 12 inches)

A. 18 in
B. 72 in
C. 96 in


Sagot :

Certainly! Let's work through the steps to find the length of James's rectangular yard in inches, given the perimeter and width of his fenced yard.

1. Identify Given Information:
- Perimeter of the yard, [tex]\(P\)[/tex], is 20 feet.
- Width of the yard, [tex]\(W\)[/tex], is 2 feet.
- Conversion factor: 1 foot = 12 inches.

2. Write the Perimeter Formula:
The formula for the perimeter of a rectangle is:
[tex]\[ P = 2L + 2W \][/tex]
where [tex]\(L\)[/tex] is the length and [tex]\(W\)[/tex] is the width.

3. Substitute Known Values into the Formula:
[tex]\[ 20 = 2L + 2(2) \][/tex]

4. Simplify the Equation:
[tex]\[ 20 = 2L + 4 \][/tex]

5. Isolate the Length (L):
Subtract 4 from both sides of the equation:
[tex]\[ 20 - 4 = 2L \][/tex]
[tex]\[ 16 = 2L \][/tex]

6. Solve for the Length (L):
Divide both sides by 2:
[tex]\[ L = \frac{16}{2} = 8 \text{ feet} \][/tex]

7. Convert the Length to Inches:
Since 1 foot is equal to 12 inches,
[tex]\[ L = 8 \text{ feet} \times 12 \text{ inches/foot} = 96 \text{ inches} \][/tex]

Therefore, the length of James's rectangular yard in inches is [tex]\( \boxed{96 \text{ inches}} \)[/tex].