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方程问题

  • 方程问题



  • 120



  • (N*πR)/180=18.84
    N=18.84/(πR)/180
    =18.84/(3.14*9)/180=120



  • 120



  • 120



  • 最佳答案 - 由投票者2008-06-02 18:45:18选出

    35



  • 120



  • N=180L/πR=180×18.84/（3.14×9）=20×6=120



  • 120








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    Posted on January 5th, 2009 by HENRY
    Filed under: xn--8prq9q.com | edit