Math

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Engine failure forced Robbin to pilot her Cessna150 to an emergency landing. TO land, Robbin's plane glided 17,000 ft over a 15,000-fot stretch of deserted highway. From what altitude did the descent begin?

  • Math -

    You're looking for a side of a right-angle triangle. Use the Pythagorean Theorem.

    a^2 + b^2 = c^2

    15,000^2 + b^2 = 17,000^2

    225,000,000 + b^2 = 289,000,000

    b^2 = 289,000,000 - 225,000,000

    b^2 = 64,000,000

    b = 8,000 ft

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