SOLUTION: If the top of a coke can has a 7 cm diameter, what is the radius, circumfrence and area?

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Question 257780: If the top of a coke can has a 7 cm diameter, what is the radius, circumfrence and area?
Answer by rfer(16322) About Me  (Show Source):
You can put this solution on YOUR website!
r=.5d
r=3.5 cm
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c=pi*d
c=7*3.1416
c=22 cm
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a=pi*r^2
a=3.14*3.5^2
a=3.14*12.25
a=38.47 sq cm