Question

Bob fenced in his backyard. The perimeter of the yard is 22 feet, and the length of his yard is 5 feet. Use the perimeter formula to find the width of the rectangular yard in inches:
P = 2L + 2W



A. 6 in.
B. 12 in.
C. 72 in.
D. 144 in.

Answer 1

Answer: C. 72 in.

Step-by-step explanation:

1. Since the perimeter is 22, take out 10, or (5 × 2) to get 12
2. Now divide 12 by 2 to get 6.
3. Since the answer is in inches, multiply by 12 to get 72 inches.

Proof:

P = 2L + 2W

22 = 2(5) + 2(6)

22 = 10 + 12

22 = 22

Answer 2

The width of the rectangular yard is 72 in.

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication and division.

The perimeter is 22, take out 10, or (5 × 2) to get 12. Now divide 12 by 2 to get 6. Since the answer is in inches, multiply by 12 to get 72 inches.

P = 2L + 2W

22 = ( 2 x 5 ) + 2W

22 = 10 + 2W

W = 12 / 2

W = 6 feet

W = 6 x  12 inches = 72 inches

Therefore, the width of the rectangular yard is 72 in.

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