Find the perimeter of the shaded region if ABCD is a square of side 21cm and APB & CPD are semicircles.


Dear Student,

The figure is missing from your question.

I am assuming the figure that is mentioned below.



Radius of semicircle APB = r = 212 cmRadius of semicircle CPD = r = 212 cmNow, perimeter of shaded region = AD + BC + arc APB + arc CPD=21 + 21 + πr + πr=42 + 2πr=42 + 2 ×227×212=42 + 66=108 cm

Hope this would clear your doubt.

Do let us know in case of any further concerns.

Regards

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