(26.87+26.52)*81.2/2=2167.634(平方米)=3.251451(亩)请采纳谢谢
(26.87+26.52)X81.2÷2=53.39X81.2÷2=4335.268÷2=2167.634(平方米)2167.634÷666.7≈3.25(亩)
解:(26.87+26.52)*81.2 =53.39*81.2=