1.长宽高分别为xyz,2x+2y=2.85-0.05,x+y=1.4,同理x+z=1.3,y+z=1.1,x=0.8,y=0.6,z=0.5,体积=0.8*0.6*0.5=0.24立方米
2.x/3-y=4,x/4-y=1,解出绳长x=36,井深y=8
3.12X+5Y=99,X+Y>10,解得X
1.长宽高分别为xyz,2x+2y=2.85-0.05,x+y=1.4,同理x+z=1.3,y+z=1.1,x=0.8,y=0.6,z=0.5,体积=0.8*0.6*0.5=0.24立方米
2.x/3-y=4,x/4-y=1,解出绳长x=36,井深y=8
3.12X+5Y=99,X+Y>10,解得X