Answer:

Explanation:
GIVEN: One airport has a ramp sloping down from the passenger waiting area to the plane. If the distance from the waiting area to the plane is
and the height from the ground to the waiting area is
.
TO FIND: length of ramp.
SOLUTION:
Consider the figure attached
Distance from the waiting area to the plane

height from the ground to the waiting area

let the length of ramp be

Now,
Using Pythagorean theorem



Hence the length of ramp is
