Note: Kindly provide a solution pls. The answer is already provided. Thank you! 1.12 Two identical semi-circles, having a radius of 5 cm., are inscribed in a big semi-circle that has a radius equal to twice of that of the idential semi-circles. (or 2x5 cm.) The centers of the three semi-circles are collinear. If a smaller circle is placed such that it will be tangent internally to the big semi-circle and tangent externally to the two semi-circles, find the area (cm^2) enclosed by the biggest semi-circle but outside of the two semi-circles and the circle. Ans: 43,633

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