A ladder \( 17 \mathrm{~m} \) long, reaches at a window of a building \( 15 \mathrm{~m} \) above...

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A ladder \( 17 \mathrm{~m} \) long, reaches at a window of a building \( 15 \mathrm{~m} \) above the ground. Find the distance of the foot of the ladder from the building.
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