Question

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Answer 1

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Answer:-

The area of the shaded region = Area of larger semicircle of radius 28cm -
Area of smaller semicircle of radius 21cm

Area of semicircle = πr²/2


Step-by-step solution:-

The area of the shaded region = π [ 28² - 21²]/2

=> A1 = 1.57 (784-441)

=> A1 = 538.51 sq.cm



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