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           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation 20*lg√(100×((22.41*3.115156)^2+1)÷3.115156^2÷(0.04*3.115156^2+1)÷(0.25*3.115156^2+1)÷((422.86*3.115156)^2+1)) .
    Question type: Mathematical calculation
    Solution:
          20*lg√(100×((22.41*3.115156)^2+1)÷3.115156^2÷(0.04*3.115156^2+1)÷(0.25*3.115156^2+1)÷((422.86*3.115156)^2+1))
        =20*lg√(100×(69.810646^2+1)÷3.115156^2÷(0.04*3.115156^2+1)÷(0.25*3.115156^2+1)÷((422.86*3.115156)^2+1))
        =20*lg√(100×4874.526295÷3.115156^2÷(0.04*3.115156^2+1)÷(0.25*3.115156^2+1)÷((422.86*3.115156)^2+1))
        =20*lg√(100×4874.526295÷3.115156^2÷1.388168÷(0.25*3.115156^2+1)÷((422.86*3.115156)^2+1))
        =20*lg√(100×4874.526295÷3.115156^2÷1.388168÷3.426049÷((422.86*3.115156)^2+1))
        =20*lg√(100×4874.526295÷3.115156^2÷1.388168÷3.426049÷(1317.274866^2+1))
        =20*lg√(100×4874.526295÷3.115156^2÷1.388168÷3.426049÷1735214.072595)
        =20*lg√0.006087
        =20*lg0.078019
        =20*-1.1078
        =-22.156

    Answer:20*lg√(100×((22.41*3.115156)^2+1)÷3.115156^2÷(0.04*3.115156^2+1)÷(0.25*3.115156^2+1)÷((422.86*3.115156)^2+1))=-22.156


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