s=pi ?

王守恩

\((1 + (2 + (3 + (4 + (5 + (6 + (7 + (8 + (9+...)^{1/2})^{1/2})^{1/2})^{1/2})^{1/2})^{1/2})^{1/2})^{1/2})^{1/2}\)=?

yigo

https://mathworld.wolfram.com/NestedRadicalConstant.html

王守恩

已知四边形一内角为60度,  周长为4,  求四边形面积最大值。