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Can anybody please help?
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4 votes
Can anybody please help?

Can anybody please help?-example-1
User Serbin
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Area of the shaded region = Area of a square - Area of a circle

Side of a square = 2r
Area of a square = (2r)² = 4r²

Area of a circle = πr²

Area of the shaded region = 4r² - πr² = r²(4-π)

User Akos
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