pls solve this question
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Hi...
Here's your answer
Side of square= diameter of semicirle=21 cm
radius = 21/2 cm
Perimeter of square = 4 × side
= 4 × 21
= 84 cm
Perimeter of 2 semi circles = 2× pi × r
= 2 × 22/7 ×21/2
=66 cm
Perimeter of shaded region = perimeter of square - perimeter of 2semi circles
= 84 - 66
= 18 cm
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