What is pi? If the area of a circle is 49π, what is its circumference? If a circle is inscribed in a square, what is the ratio of the areas of the circle and the square?

\(O\) is the center of the circle above. Find, in degrees, \(\angle QPR + \angle ORQ.\)

The overlapping areas of two circles each have an area of 5, and the gold area is 35.

Find the area of one circle.

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