if your house is 8m high ur ladder is 9m long and you have to have the ladder 2 m from the house.

Question

.....how do u figure this out

Answer 1

The ladder needs to be only √(8²+2²)=√68=8.25m long to reach the roof of the house, so if the foot of the ladder must be 2m from the house, then the ladder will protrude 9-8.25=0.75m beyond the roof. That is a comfortable length to use the ladder to access the roof in safety.