Posted by **Joyce** on Monday, January 31, 2011 at 4:54pm.

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 -
**MathMate**, Monday, January 31, 2011 at 7:05pm
Grade is rise/run, or difference in elevation divided by the horizontal distance.

If the roof rises 1.4' vertically over a horizontal distance of 11.8', the grade is 1.4/11.8=0.1186, or in percents, then multiply the above fraction by 100 to get

1.4/11.8*100=11.86%.

## Answer this Question

## Related Questions

- Algebra - A roof rises 2.3 feet vertically, and 7.4 feet horizontally. What is ...
- MAT116-Algebra 1A math - A roof rises 1.9 feet vertically and 5.9 feet ...
- algebra - a roof rises 1.3 feet vertically and 13.1 feet horizontally. wgat is ...
- Algebra - a roof rises 2.4 feet vertically and 7.3 feet horizontally. what is ...
- physics - A roof rises 1.7 feet vertically and 13.3 feet horizontally. What is ...
- mat 116 - a roof rises 1.9 feet vertically and 7 feet horizontally. what is the ...
- math - a roof rises 1.1 feet vertically and 13.6ft horizontally what is the ...
- math - a roof rises 1.2 feet vertically and 5.9 feet horizontally. What is the ...
- Math - a roof rises 1.9 feet vertically and 9.1 feet horizonally. what is the ...
- math - a roof is 2.5 feet vertically and 12.3 feet horizontally. what is the ...