To wire a structure with receptacles at $35 per outlet, what is the cost for a 24- foot by 24- foot building with receptacles placed every 12 feet?

To wire a structure with receptacles at $35 per outlet, what is the cost for a 24- foot by 24- foot building with receptacles placed every 12 feet?

• A. $180
• B. $210
• C. $280
• D. $320

Answer: (C)

Placing receptacles at regular intervals around a structure uses the total boundary length and the spacing between outlets. For a 24 ft by 24 ft building, the perimeter is 2 × (24 + 24) = 96 feet. With receptacles every 12 feet, you can fit 96 ÷ 12 = 8 outlets around the outside. Corner outlets count for both adjacent walls, so there’s no double-counting. At $35 per outlet, the total cost is 8 × 35 = $280.

Placing receptacles at regular intervals around a structure uses the total boundary length and the spacing between outlets. For a 24 ft by 24 ft building, the perimeter is 2 × (24 + 24) = 96 feet. With receptacles every 12 feet, you can fit 96 ÷ 12 = 8 outlets around the outside. Corner outlets count for both adjacent walls, so there’s no double-counting. At $35 per outlet, the total cost is 8 × 35 = $280.