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26 January, 12:32

If a 36-foot tree casts a 28-foot shadow at the same time near by building casts a 70-foot shadow, how tall is the building?

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  1. 26 January, 14:54
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    Actual length / shadow ratio is equal

    Let the height of the building be x, then

    36/28 = x/70

    x = (36 x 70) / 28 = 2,520/28 = 90.

    Therefore, the height of the building is 90 feet.
  2. 26 January, 14:58
    0
    The building is 78 feet tall.
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