Roofers describe the steepness of a roof by it's pitch, the number of inches of rise for each 12 inches of run. A "3 in 12" roof rises 3 inches for every 12 inches of run.a. What is the slope of a "3 in 12" roof?b. A roof rises 100 inches over a run of 20 feet. Find the slope of the roof.



Answer :

It's pitch, the number of inches of rise for each 12 inches of run.

A "3 in 12" roof rises 3 inches for every 12 inches of run.

a. What is the slope of a "3 in 12" roof?

ratio 1: 12

1/ 12 = 3/ x

x= 36

b. A roof rises 100 inches over a run of 20 feet. Find the slope of the roof.​

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