<PRE><B>Question 311420</B>
If the diameter of a circle is 1.3 x 10-12power what is the radius?
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r = (1/2)(1.3 x 10^-12)
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1.3x10-12 = 13x10-13
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So, r = (1/2)(13x10^-13) = 6.5x10^-13
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Cheers,
Stan H.
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