作业帮π*0.75^2*1.3/(4/3)*π*0.025^3
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π*0.75^2*1.3/(4/3)*π*0.025^3
π*0.75^2*1.3/(4/3)*π*0.025^3
π*0.75^2*1.3/(4/3)*π*0.025^3
π*0.75^2*1.3/(4/3)*π*0.025^3
=0.75^3*1.5/0.025^3
=30^3*1.3
=35100
π*0.75^2*1.3/(4/3)*π*0.025^3
=π*(3/4)^2*1.3*(3/4)*π*(1/40)^3
=π*(3/4)^2*1.3*(3/4)*π*(1/40)^3
=1.3π^2*(3/4)^3*(1/40)^3
=1.3π^2*(3/4*1/40)^3
=1.3π^2*(3/160)^3
=1.3*3.14^2*27/4096000
=0.0000845
=8.45*10^-5
π*0.75^2*1.3/(4/3)*π*0.025^3
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