1*1*π =3.14
2*2*π =12.56
3*3*π =28.26
4*4*π =50.24
5*5*π =78.5
6*6*π =113.04
7*7*π =153.86
8*8*π =200.96
9*9*π =254.34
10*10*π =314
π(1^2*π+2^2*π+3^2*π+……+20^2*π)=π/6*(20+1)(2*20+1)
1^2*π+2^2*π+3^2*π+……+20^π=
是不是这样的哦
没看懂啊,能说清楚点吗