Question

Shingles are laid so that 5 inches or 5/2 feet are exposed to each layer. How many feet of roof will be covered by 25 courses?

A) 125 feet
B) 62.5 feet
C) 50 feet
D) 31.25 feet

Answer 1

To find how many feet of roof 25 courses of shingles will cover, convert 5 inches to feet (5/12 feet) and multiply by the number of courses (25), which equals 10.4175 feet of roof coverage.

Step-by-step explanation:

To calculate the total feet of roof covered by 25 courses of shingles when each layer exposes 5 inches, you first need to convert 5 inches to feet. Since there are 12 inches in a foot, 5 inches is equal to 5/12 feet. This simplifies to approximately 0.4167 feet when expressed as a decimal.

Now, since you have 25 courses of shingles, you will multiply the amount of roof covered by one course (0.4167 feet) by the number of courses (25). This calculation is:

0.4167 feet/course x 25 courses = 10.4175 feet

Thus, 25 courses of shingles will cover 10.4175 feet of roof.