百科知识

3.14的平方68.6乘1.314简便运算?

2014-02-16 14:05:061***
3.14的平方 68.6乘1.314简便运算?3.14的平方68.6乘1.314简便运算?:3.14²+68.6×1.314 =3.14²+68.6×(1+0.314) =3.14²+68.6×1+68.?

最佳回答

  • 3.14²+68.6×1.314 =3.14²+68.6×(1+0.314) =3.14²+68.6×1+68.6×0.314 =68.6+3.14²+6.86×3.14 =68.6+3.14×(3.14+6.86) =68.6+3.14×10 =68.6+31.4 =100
    2014-02-17 15:20:41
  • 很赞哦! (84)