Answer:
The distance is 9.17 feet.
Step-by-step explanation:
The ramp, vertical distance it is lifted, and the ground form a right triangle, whose hypotenuse the ramp, and whose base and perpendicular are the ground and the lifted distance respectively.
Thus we have a triangle whose hypotenuse is 10 feet, the perpendicular is 4 feet, and a base feet.
The Pythagorean theorem gives:
We substitute the values , and solve for B:
Thus the distance is 9.17 feet.