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OpenStudy (rayman5766):
What is the approximate area of a circle with a radius of 13 cm? A. 40.8 cm² B. 530.7 cm² C. 784 cm² D. 2461.6 cm²
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OpenStudy (anonymous):
B
OpenStudy (rayman5766):
how do you know is there an example
OpenStudy (anonymous):
A=Pi(r)^2
OpenStudy (anonymous):
ok?
OpenStudy (anonymous):
thats the formula doofus
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OpenStudy (rayman5766):
you put a ? this after you said ok so I thought you were confused jerk
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