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Mathematics, 21.02.2020 22:53 camiee13dvivvj

A ladder is leaning against a wall so that the top of it is touching the top of the wall. Katashi is standing below the ladder. He touches the ladder by the top of his head. Katashi is 6 feet tall. The distance from katashi to the bottom of the ladder is 9 feet. The distance from the wall to katashi is 12 feet. What is the highs of the wall?

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