A roof rises 1.7 feet vertically and 13.3 feet horizontally. What is the grade of the roof in percentage

To determine the grade of the roof, we need to calculate the ratio of the vertical rise to the horizontal run and convert it to a percentage.

The grade of a roof is calculated using the formula:

Grade = (rise / run) x 100

Given that the roof rises 1.7 feet vertically and runs 13.3 feet horizontally, we plug these values into the formula:

Grade = (1.7 / 13.3) x 100

Now let's calculate:

Grade = 0.1278 x 100

Grade ≈ 12.78

So, the grade of the roof is approximately 12.78%.