a roof rises 1.3 feet vertically and 13.1 feet horizontally. wgat is the grade of the roof?
To calculate the grade of the roof, we need to determine the ratio of the vertical rise to the horizontal run. The grade is typically expressed as a percentage or as a ratio.
In this case, the roof rises 1.3 feet vertically and 13.1 feet horizontally. The ratio of the vertical rise to the horizontal run can be calculated as:
Grade = (Vertical Rise / Horizontal Run) * 100
Substituting the given values:
Grade = (1.3 / 13.1) * 100
To find the grade, divide the vertical rise by the horizontal run and then multiply by 100.
Simplifying the calculation:
Grade = (0.099236) * 100
Grade ≈ 9.92%
Therefore, the grade of the roof is approximately 9.92%.