# Question: according to the americans with disabilities act a ramp cannot...

###### Question details

According to the Americans with Disabilities Act, a ramp cannot
have an incline that is greater than 5^{o}. The regulations
also state that the maximum rise of a ramp is 30 inches. When a
ramp needs to reach a height greater than 30 inches, a series of
ramps connected by 60-inch landings can be used, as shown
below.

a) What is the maximum horizontal length of the base of one ramp, in feet? Round to the nearest foot

**length = ____ feet**

b) If a doorway is 7.5 feet above the ground, what is the least number of ramps and landings you will need to lead to the doorway?

**fewest ramps = _____**

**fewest landings = ______**