A trolley of mass 600 kg is at point X at the top of a ramp. As it moves down the ramp to point Y, its gravitational potential energy store decreases by 88,200 J88,200\text{ J}88,200 J.

Calculate the height hhh, shown in the diagram.
(gravitational field strength, g=9.8 N/kgg = 9.8\text{ N/kg}g=9.8 N/kg)