Question 185991
The diameter of a circle is 1.3x10 raised to negative 12 meters. What is its radius?
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D = 1.3*10^-12, or 1.3E-12
1.3E-12 = 13E-13  move the decimal one, and change the exponent one.
The radius is half the diameter.
r = 6.5E-13, or 6.5*10^-13 meters
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