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〖1/1算式〗
    作业：求算式 0.813*sqrt(1.215*1.215-0.813*0.813)+π*1.25*1.25*arcsin0.669135802469135802 的值.
    题型：数学计算
    解:
          0.813*sqrt(1.215*1.215-0.813*0.813)+π*1.25*1.25*arcsin0.669135802469135802
        =0.813*sqrt0.815256+π*1.25*1.25*arcsin0.669135802469135802
        =0.813*0.902915+π*1.25*1.25*arcsin0.669135802469135802
        =0.813*0.902915+π*1.25*1.25*0.733045
        =0.73407+π*1.25*1.25*0.733045
        =0.73407+3.926991*1.25*0.733045
        =0.73407+4.908739*0.733045
        =0.73407+3.598327
        =4.332397
    答案:0.813*sqrt(1.215*1.215-0.813*0.813)+π*1.25*1.25*arcsin0.669135802469135802=4.332397
    注：弧度制

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