2×(5×2+5×1.2+2×1.2)=36.8
2(5*1.2+5*2+1.2*2)=36.8请采纳!帮助我完成采纳任务!谢谢!
2*(5*1.2+5*2+1.2*2)=48.8
(5×6+5×1.2+1.2×2)×2=(30+6+2.4)×2=38.4×2=76.8平方米
(5*1.2)*2+(5*2)*2+(1.2*2)*2