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The shaded figure below was obtained from a rectangular piece of paper from which a semi-circle of diameter 14cm was removed and another semi-circle of diameter 7cm added.
What is the area of the shaded figure? (Take #pi=22/7#)
A.#229 1/4 cm^2#
B.#306 1/4 cm^2#
C.#152 1/4 cm^2#
D.#113 3/4 cm^2#