The figure consists of 4 unit squares. What is the area of the portion shaded blue?

What is the area of the red figure? (All arcs shown are of circles with a radius of 2.)

The large right triangles are identical. Which is larger, the pink area on the left or the blue area on the right?

All internal triangles are similar to the larger triangles.

**What fraction of the larger square is colored green?**

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