Answer:
Amedia = 30 m
Top of the Lighthouse = +45 m
Boat = 0
Fish = - 10 m
The distance between Amelia and the fish is 40 meter
Explanation:
Amelia = 30 m ( height of the cliff) since Amelia is standing on it's edge
-Top of lighthouse = lighthouse is located on top of the cliff ;
mean height of cliff + height of light house = (30 + 15) = 45 m
-The boat = 0 (on the surface of water) ; this is the sea level surface or point
-The fish = - 10 m (10 meters below the water surface).
Distance between Amelia and fish :
30 m - ( - 10 m) = 30 m + 10 m = 40 m