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OpenStudy (anonymous):
http://media01.owotw.com/g_mat06_2011/8/img_semicircle_d.gif What is the area of the semicircle? 69.08 mm2 138.16 mm2 150.72 mm2 189.97 mm2
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OpenStudy (anonymous):
Remember the formula for area of a circle is pi * r^2. This is a semicircle, so it will be the area of a whole circle divided by 2.
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