Anonymous
Anonymous asked in Science & MathematicsMathematics · 9 years ago

help with basic algebra?

the base of a 20 ft ladder is 10 ft from a building if the ladder reaches the flat roof how tall is the building

is the building 20 ft as well?

3 Answers

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  • Anonymous
    9 years ago
    Favorite Answer

    20^2 - 10^2 = x^2

    400 - 100 = x^2

    300 = x^2

    The square root of 300 = x

    10 times the square root of 3 = x

  • 9 years ago

    The building is 10 feet tall

  • 9 years ago

    is this algebra? cant find the symbols looks like statistic question

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