In the figure shown below, ABCD is a diameter of the circle whose radius is 42cm. Semicircles are drawn on the diameters AB and BD, where ab=bc=cd. Find the perimeter of the shaded part.
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Answer:
A) 264 cm
Step-by-step explanation:
peremeter of circle= 2^r
= 2 × 22÷7×42
= 264
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