The equilateral triangles are in total two and a half units across which means the area of the square is 2.5^2 or \(\boxed{\frac{25}{4}}\). and why so much geometry :P

The equilateral triangles are in total two and a half units across which means the area of the square is 2.5^2 or \(\boxed{\frac{25}{4}}\). and why so much geometry :P