Mr. Garcia is replacing the insulation in his attic and garage. Each roll of insulation is 1.25 feet wide and 50 feet long. The picture shows the dimensions of the attic and the garage that he needs to cover.

Question

100 feet long
25 feet wide

Answer 1

To calculate the number of rolls of insulation needed, we need to find the total area of the attic and garage.

The area of the attic is 100 feet long and 25 feet wide, so its total area is 100 feet * 25 feet = 2500 square feet.

Since each roll of insulation is 1.25 feet wide and 50 feet long, its area is 1.25 feet * 50 feet = 62.5 square feet.

To find the number of rolls needed, we divide the total area of the attic and garage by the area of each roll:
Number of rolls = Total area / Area of each roll = 2500 square feet / 62.5 square feet = <<2500/62.5=40>>40 rolls.

Therefore, Mr. Garcia needs 40 rolls of insulation to cover his attic and garage.