SOLUTION: A roof rises 1.4 feet vertically and 11.8 feet horizontally. What is the grade of the roof? The grade of the roof is _____% how do I begin to find the answer to this?

Algebra ->  Graphs -> SOLUTION: A roof rises 1.4 feet vertically and 11.8 feet horizontally. What is the grade of the roof? The grade of the roof is _____% how do I begin to find the answer to this?      Log On


   



Question 402317: A roof rises 1.4 feet vertically and 11.8 feet horizontally. What is the grade of the roof? The grade of the roof is _____% how do I begin to find the answer to this?
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
The grade or slope (m) of a roof is defined as:rise%2Frun
In this problem the rise is given as 1.4 ft. while the run (horizontal distance) is given as 11.8 ft., so...
m+=+1.4%2F11.8
m+=+0.1186 This is the grade of the roof.
You may see this as a percent, so multiply by 100.
100%280.1186%29+=+11.86 which would probably be rounded up to 12% grade.