1、(1/3*8*8*15)/(5*5)-20=-7.2cm
2、A容器中水的体积2+0.4*4=3.6L
B容器中水的体积0.4*4=1.6L
1.6/5*5=3.6/r*r r=7.5
3、圆锥体积为1/3*π*r*r*2r
正方体体积为2r*2r*2r
剩余为1-(π/12)=73.83%
1、(1/3*8*8*15)/(5*5)-20=-7.2cm
2、A容器中水的体积2+0.4*4=3.6L
B容器中水的体积0.4*4=1.6L
1.6/5*5=3.6/r*r r=7.5
3、圆锥体积为1/3*π*r*r*2r
正方体体积为2r*2r*2r
剩余为1-(π/12)=73.83%