Question

一些数学题,求好心人帮我3至5要算式,

Answer 1

3) 3.14/3.14/2=1/2=0.5m0.5*0.5*3.14*1.2=0.25*3.14*1.2=0.785*1.2=0.942m3500*0.942=471kg4) 3*3*3.14*3=9*3.14*3=28.26*3=87.78≈88dm35) 188.4÷6×2=62.8 62.8+188.4=251.2cm3