Bunuel wrote:

Thus the area of the semicircle is \(\frac{4}{2}=2\) times greater than the area of the inscribed circle: so, the area of the semicircle is 2 units, the area of the inscribed circle is 1 unit, and the area of the semicircle not covered by the inscribed circle is also 1 unit. Ratio: \(\frac{2}{1}\).

Answer: E

why is the area of the semicircle NOT covered by the inscribed circle also 1?!

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