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algebra 2

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Guy wire. How long is a guy wire reaching from the top of a 21ft pole to a point on the ground 14 ft from the pole?

Thank you.

  • algebra 2 -

    28ft (27.784887978899609016865094082057ft to be exact)

  • algebra 2 -

    since when this is drawn it forms a right triangle, we use pythagorean theorem:
    c^2 = a^2 + b^2
    c = hypotenuse
    a and b are base and height of the triangle
    c^2 = 14^2 + 21^2
    c = sqrt (196 + 441)
    c = 25.24 ft

    hope this helps~ :)

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