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Class 7 Mathematics area of varied shapes questions and answers

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. $113 3/4 cm^2$

(7m 14s)

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