Question 35700
If the diameter of a circle is 1.3X10^-12 meters,then what is its radius?

Radius = diameter/2
Radius = (1.3X10^-12)/2
       =0.65X10^-12
       =6.5X10^-1(10^-12)
       =6.5X10^-13
Cheers,
Stan H.