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27 January, 13:15

A ladder reaches a window 20 feet above the ground. The foot of the ladder is 4 feet from the wall. Which of the following measures correspond to the length of the ladder? Round to the nearest hundredth.

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  1. 27 January, 13:43
    0
    Use pythagorians theorem a^2 + b^2 = c^2. 4^+20^ = 20.40 feet. The ladder is 20.40 feet long.
  2. 27 January, 13:45
    0
    A² + b² = c²

    c² = 20² + 4²

    c² = 416

    c = √416

    c = 20.40 (nearest hundredth)
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