I cannot figure this one out. Please help.

The ramp shown below is used to move crates of apples to loading docks at different heights. When the horizontal distance AB is 12 feet, the height of the loading dock, BC, is 6 feet. What is the height of the loading dock DE?

10 feet
12 feet
17 feet
18 feet

3 answers

Cannot see ramp. You cannot copy and paste here.
ok, I did nothing worng
Without the diagram, we have no idea what DE stands for.