strange question but I tried just for fun
I found 10*root3
I imagine a plan and I put multiple equilateral triangles.... I don't know if it's the best way....
The area of 1 triangle is root3, so 10 triangles is 10root3
sorry for the drawing because I did it quite fast with Paint and the triangles don't look so equilateral
example.jpg [ 3.5 KiB | Viewed 438 times ]