Question

A ladder 13m long reaches a window which is 5m above the ground, on one
side of the street. Keeping its foot at the same point, the ladder is turned to
the other side of the street to reach a window at a height of 12m. Find the
width of the street.

Answer 1

Answer:

Step-by-step explanation:

When the window is 5m above the ground then feet of ladder is 12m (√13² - 5²) away from the wall and when the window is 12m above the ground then the feet of the ladder is 5m(√13² - 12²) away from the ground.

Therefor Width of street = 12 + 5 = 17m

[Only pythagoras theorem is used in this question]