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?

Rectangle ABCD has AB = 4 and BC = 8. Construct arc AE centered at B with E on side BC and construct arc CF centered at E with F along side AD. What is the area of AFCE, the region shaded in blue?

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?