Question

A ladder 15 feet long reaches a window which is 9 feet above the ground on one side of a street. Keeping the feet of the ladder at the same point, the ladder is turned to the opposite side of the street to reach a window which is at a height of 12 feet from the ground. What is the width of the street?​

Answer 1

Answer:

The answer is 21 feet...

Explanation inside the photo..

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