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〖1/1算式〗
    作业：求算式 0.5*π*1.5*(70*14.1+80*4.93)+0.25*π*1.5*1.5*0.49*(430+5*(117+9.3*4.93)/(15.6+4.93)*(12.6+4.93)) 的值.
    题型：数学计算
    解:
          0.5*π*1.5*(70*14.1+80*4.93)+0.25*π*1.5*1.5*0.49*(430+5*(117+9.3*4.93)/(15.6+4.93)*(12.6+4.93))
        =0.5*π*1.5*1381.4+0.25*π*1.5*1.5*0.49*(430+5*(117+9.3*4.93)/(15.6+4.93)*(12.6+4.93))
        =0.5*π*1.5*1381.4+0.25*π*1.5*1.5*0.49*(430+5*162.849/(15.6+4.93)*(12.6+4.93))
        =0.5*π*1.5*1381.4+0.25*π*1.5*1.5*0.49*(430+5*162.849/20.53*(12.6+4.93))
        =0.5*π*1.5*1381.4+0.25*π*1.5*1.5*0.49*(430+5*162.849/20.53*17.53)
        =0.5*π*1.5*1381.4+0.25*π*1.5*1.5*0.49*1125.261309
        =1.570796*1.5*1381.4+0.25*π*1.5*1.5*0.49*1125.261309
        =2.356194*1381.4+0.25*π*1.5*1.5*0.49*1125.261309
        =3254.846392+0.25*π*1.5*1.5*0.49*1125.261309
        =3254.846392+0.785398*1.5*1.5*0.49*1125.261309
        =3254.846392+1.178097*1.5*0.49*1125.261309
        =3254.846392+1.767145*0.49*1125.261309
        =3254.846392+0.865901*1125.261309
        =3254.846392+974.364893
        =4229.211285
    答案:0.5*π*1.5*(70*14.1+80*4.93)+0.25*π*1.5*1.5*0.49*(430+5*(117+9.3*4.93)/(15.6+4.93)*(12.6+4.93))=4229.211285

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