计算:3.14^2+6.28×0.86+0.86^2
问题描述：
计算:3.14^2+6.28×0.86+0.86^2
答
3.14^2+6.28×0.86+0.86^2
=3.14^2+2×3.14×0.86+0.86^2
=(3.14+0.86)^2
=4^2
=16