一个圆柱的侧面展开图是长方形，长方形的长是12.56厘米，宽是3厘米，它的表面积是多少？
把小数化成最简分数，把分数化成小数． 0.6= 0.875= 0.35= 1.36== = = =
化为带分数.．
把下列分数化成最简分数= = == = =
化成最简分数或整数.．
= 
= 
= 
=
．
= 
= 
=
= 
= 
=
．
．
粤公网安备 44130202000953号