Mathematics
         
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           ☆1 arithmetic calculations

[1/1 Formula]
    Work: Calculate the value of equation 3.14*1.2^2/4*(0.3+0.8)+3.14*0.285^2/4*10.5 .
    Question type: Mathematical calculation
    Solution:
          3.14*1.2^2/4*(0.3+0.8)+3.14*0.285^2/4*10.5
        =3.14*1.2^2/4*1.1+3.14*0.285^2/4*10.5
        =3.14*1.44/4*1.1+3.14*0.285^2/4*10.5
        =3.14*1.44/4*1.1+3.14*0.081225/4*10.5
        =4.5216/4*1.1+3.14*0.081225/4*10.5
        =1.1304*1.1+3.14*0.081225/4*10.5
        =1.24344+3.14*0.081225/4*10.5
        =1.24344+0.255047/4*10.5
        =1.24344+0.063762*10.5
        =1.24344+0.669501
        =1.912941

    Answer:3.14*1.2^2/4*(0.3+0.8)+3.14*0.285^2/4*10.5=1.912941


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