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2 October, 06:19

The diagram shows a square of side 7 cm with two quadrants drawn inside. Find the area of the shaded region. (take pi = 22/7)

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  1. 2 October, 06:29
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    The area of the shaded region:

    A = r ² π - a²

    where: r = d/2 = 7√2 / 2

    A = (7√2 / 2) ² · 22/7 - 7²

    A = 49 · 2 / 4 · 22/7 - 49

    A = 49/2 · 22/7 - 49

    A = 7 · 11 - 49

    A = 77 - 49

    Answer: A (shaded) = 28
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