Question

A 15 m long ladder is placed against a wall in such a way that the foot of the ladder is 9m away from the wall up to what height does the ladder reach the wall

Answer 1

• If we consider a right angle triangle then according to question
• Base=9m and hypotenuse =15m
• We have to found the perpendicular of the triangle
• So perpendicular = 15^2-9^2=12m
• So at a height of 12m the ladder reaches the wall