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diameter of shaded semicircle = 14/2 = 7 cm
area of 1 semicircle = πr²/2 = 77 cm²
area of 2 semicircle = 77 × 2 = 154 cm²
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area of square = 14² = 196 cm²
area of unshaded region = area of square - area of shaded region
= 196 - 154
= 42 cm²
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