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

[ 1/1 Equation]
    Work: Find the solution of equation 4000*36*（S-0.0154）/(S*0.0154)+1.29/2*139*139 = 1.29/2*(2.15/S)^2 .
    Question type: Equation
    Solution:
    the solutions is:
        S≈0.015400 , keep 6 decimal places    
    There are 1 solution(s).

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