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OpenStudy (anonymous):
A contractor has installed a silt fence around an area that is semi-circular and level to prevent soil from the construction site entering nearby streams. The diameter of the semi-circle is 1200 feet. how many acres are within the enclosed by the fence?
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OpenStudy (studygurl14):
find the area of the circle, then divide by 2 since it is a semi-circle. Hope this helps. :)
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