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19 September, 21:52

There is a figure made up of 4 identical semicircles. The radius of each circle is 10. Find the area of this figure. (Show your work)

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  1. 20 September, 00:25
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    Area of circle=pir^2

    4 of them, but wait, semicircles are half circles

    1/2 circle times 4=2 circles

    so

    r=10

    2pir^2

    2pi10^2

    2pi100

    200pi square units

    about 628.31 square units
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