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OpenStudy (anonymous):
find the area of a circle whose diameter is 20 yards
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OpenStudy (anonymous):
diameter is 20 yards, radius is 10 yards Area of a circle is equal to Pi times the radius squared Pi*10^2 100*Pi ~314 square yards
OpenStudy (anonymous):
Recall that Pi is approximately equal to 3.14
OpenStudy (anonymous):
so the formula would be pir^2
OpenStudy (anonymous):
Yes
OpenStudy (anonymous):
3.14 * 10^2
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