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OpenStudy (anonymous):
What is the area of a circle with diameter 8 ft? (A = πr2) A. 25.12 ft2 B. 50.24 ft2 C. 200.96 ft2 D. 610.01 ft2
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OpenStudy (anonymous):
d = 8 r = 4
OpenStudy (anonymous):
pi (4^2) = about 50.24
OpenStudy (anonymous):
What is the radius?
OpenStudy (anonymous):
The radius is half of the diameter.
OpenStudy (anonymous):
|dw:1325541411557:dw| a-c is the diameter, a-b is the radius
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