A ladder 13 m long reaches a window which is 12 m above the ground on side of a street. Keeping its foot at the same point, the ladder is turned to the other side of the street to reach a window 5 m high, then the width of the street is
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4
Answer:
Width of the street = 17 m
Step-by-step explanation:
In first case,
Distance to bottom of ladder from the bottom of building = √(13² - 12²)
= √(169-144) = √25 = 5 m
In second case,
Distance to bottom of ladder from the bottom of the building = √(13² - 5²)
= √(169 - 25) = √144 = 12 m
Width of the street = 5 + 12 = 17 m
Answered by
0
Answer:
17m
Step-by-step explanation:
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