In a fig a semi circle is drawn with O as centre and AB as diameter. Semi circle are drawn with AO and BO as diameter if AB=28cm find the perimeter of shaded range.
A
98cm
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B
48cm
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C
80cm
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D
88cm
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Solution
The correct option is D88cm Perimeter of the shaded region=Perimeter of bigger semi-circle+2(Perimeter of smaller semi-circle)