Answer:
Step-by-step explanation:
The right angle triangle ABC that the ladder forms with the wall is shown in the attached photo.
Triangle ABC and triangle EBD are similar triangles. This means that AC/ED = EB/AB
AB = 5.4 + 3.6 = 9 meters
AC = 13.9 meters
ED = L meters
EB = 3.6 meters
Therefore,
3.6/9 = L/13.9
Cross multiplying, it becomes
9 × L = 13.9 × 3.6
9L = 50.04
L = 50.04/9 = 5.56
Rounding up to 1 decimal place,
L = 5.6 meters
