0.2x6=1.2m0.4x6=2.4m1.2x2.4x6=17.28平方米
6×6=36m0.2×6=1.2m0.4×1.2×36=17.28㎡
66×6等于百分之三十六零点2×6=1点二零点4×1点二等于等于等于17.28
