Question

Use the diagram below to answer the question that follows. The cross section of the roof of a building shown above has a width of 40 feet and a slope of 4/5 feet. If the cross section of the roof represents an isosceles triangle, what is the height h of the roof? A. 16 feet B. 25 feet C. 32 feet D. 50 feet

Answer 1

Making a right triangle:

slope= m= 4/5

y = mx + b

You know that b = 0 because that is your referece. Then:

y = mx

If x = 20ft, then:

`y=mx=(4)/(5)*20=16ft`

y = h = 16ft