SOLUTION: A building needs a ramp to make it handicap accessible. By​ law, the ramp must run 10 inches horizontally for every 1 inch of rise. If the surface of the ramp is 79 inches l
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Question 1088007: A building needs a ramp to make it handicap accessible. By law, the ramp must run 10 inches horizontally for every 1 inch of rise. If the surface of the ramp is 79 inches long how far above the ground is the inclined end of the ramp? Round to the nearest tenth of an inch. Answer by ankor@dixie-net.com(22740) (Show Source):
You can put this solution on YOUR website! A building needs a ramp to make it handicap accessible
By law, the ramp must run 10 inches horizontally for every 1 inch of rise.
If the surface of the ramp is 79 inches long how far above the ground is the inclined end of the ramp?
Round to the nearest tenth of an inch.
:
let r = the height of the ramp
then
10r = the horizontal distance
:
The ramp is the hypotenuse of the triangle formed by the horizontal and rise
r^2 + (10r)^2 = 79^2
r^2 + 100r^2 = 6241
101r^2 = 6241
r^2 = 6241/101
r^2 = 61.792
r =
r = 7.86 ~ 7.9 inches above the ground
