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Posted by on Thursday, January 24, 2013 at 12:36am.

determine the diameter of a circle with a radius of 4.26m.

determine the area of the circle with diameter is 8mm.

  • math - grade 7 - , Thursday, January 24, 2013 at 1:10am

    d = 2 r

    d = 2 * 4.26 = 8.52 m


    A = d ^ 2 pi / 4

    A = 8 ^ 2 pi / 4

    A = 64 pi / 4

    A = 16 pi mm ^ 2

    A = 16 * 3.14 = 50.24 mm ^ 2

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