A ladder is 20 m long is placed in street so as to reach a window is 16m high. On turning the ladder on other side of the street, it reaches a point 12m high. The width of the street
28 m
25 m
27 m
32 m
Solution
In the given figure, the width of the street,
$x + y = \sqrt{(202-162)} + \sqrt{(202-122)}$
$= \sqrt{144} + \sqrt{256}$
$= 12 + 16$
= 28 m