half width is 39 feet
up 2/3 of 39
2 * 13 = 26 feet <----- answer
by the way, roofers go by pitch = height / full width so they would call this a pitch of 26/78 = 1/3
Te slope of the roof is 2/3. If the width of the house is 78 feet,what is the height of the roof, in feet? Assume the roof creates an isósceles triangle
1 answer