A rectangular doorway measures 132 centimeterstimes279 centimeters. Weatherstripping is applied on the top and the two sides. The weatherstripping costs $ 4.00 per meter. What did it cost to weatherstrip the​ door?

1 answer

First, we need to calculate the perimeter of the doorway to determine the total length of weatherstripping needed.

Perimeter = 2(132 cm) + 2(279 cm)
Perimeter = 264 cm + 558 cm
Perimeter = 822 cm

Converting the perimeter to meters:
Perimeter = 822 cm ÷ 100
Perimeter = 8.22 meters

Now, we can calculate the total cost of weatherstripping:
Cost = 8.22 meters × $4.00/meter
Cost = $32.88

Therefore, it cost $32.88 to weatherstrip the door.