What is the % of the area of the blue region as compare to the whole?

In a circle of radius 1, an equilateral triangle is inscribed in the circle as shown. What is the area of the blue region?

What is the area of the blue region in the following image?

If ABCD is a square of area 1. E, F are mid points of AB and BC respectively. What is the area of blue region?

In the figure, if ABCD and EFGC are squares with areas R and S respectively. What is the area of the blue region?