Pre-Cal

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Find the area of each circular segment to the nearest tenth, given its central angle, x, and the radius of the circle.

x= pi/8, r=7

  • Pre-Cal -

    find the area of the whole circle pi r^2
    multiply that by (central angle)/2pi
    In this case:
    Atotal = pi (49)
    so the area of this fraction of the circle is

    [(pi/8)/2pi ]pi (49)
    =(49/16)pi

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