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OpenStudy (anonymous):
What is the area of a circle if the diameter is 12 feet?? Answers: a. 113.0 ft² b. 124.8 ft² c. 37.7 ft² d. 452.2 ft²
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OpenStudy (cgreenwade2000):
Area of a circle is A= (pi)*r^2
hartnn (hartnn):
\[A =\pi d^2/4\] just plug in d =12
OpenStudy (anonymous):
Thx @hartnn
hartnn (hartnn):
welcome ^_^
OpenStudy (anonymous):
So its 3.14*144 = 452.16/4???
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hartnn (hartnn):
you forgot to divide by 4.
OpenStudy (cgreenwade2000):
|dw:1358452844870:dw|
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