If the sun is behind the building, and the building's height is h, then the longest shadow (s) cast by the fence is when the sun is just about to go down behind the building.
s/3 = (s+10)/h
If the sun is not directly behind the building, then all bets are off.
THIS IS NOTHING TO DO WITH A LADDER
A fence 3m tall is erected vertically and parallel to a building that is 10m away
please can someone tell me the maximum length of the shadow the fence will cast on the ground - thank you
1 answer