SOLUTION: Diameter of a circle. If the diameter of a circle is 1.3*10^12 meters, then what is its radius?

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Question 274211: Diameter of a circle. If the diameter of a circle is
1.3*10^12 meters, then what is its radius?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
It's half that.
d = 1.3*10^12 meters
r = 0.65E-12 meters
r = 6.5E-11 meters
or 6.5*10^-11 if you prefer inconvenience.
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I'd go with 0.65 picometers myself