So the area of our little equilateral triangle, let me write combined area. Let me do that in a neutral color. So let me do that in white. So the combined area, I'll write it a sub c, is going to be equal to the area of my triangle, a sub t, plus the area of my square. Well, the area of my triangle, we know what it's going to be. It's going to be square root of 3 times the length of a side squared divided by 4. So it's going to be square root of 3.