设宽为:xm,则长为:x+0.14 m
2(x+x+0.14)=6.28
2(2x+0.14)=6.28
2x+0.14=3.14
2x=3
x=1.5
长为:x+0.14=1.5+0.14=1.64m
6.28÷4=1.57m