Overview: 1 questions will be solved this time.Among them
           ☆1 inequalities

[ 1/1Inequality]
    Assignment:Find the solution set of inequality （300-20sqrt(3)t)^2+(20t)^2 <= （250+10t)^2 .
    Question type: Inequality
    Solution:
    The inequality can be reduced to 1 inequality：
         ( 300 - 20 * sqrt ( 3 ) * t ) ^ 2 + ( 20 * t ) ^ 2 <= ( 250 + 10 * t ) ^ 2         (1)

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    From inequality(1)：
         1.142457 ≤ t ≤ 16.047283

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    The final solution set is :
         1.142457 ≤ t ≤ 16.047283

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