Question 321391
The radius is 1/2 the diameter
given:
diameter = {{{1.3*10^(-12)}}}
radius = {{{.5*1.3*10^(-12) = .65*10^(-12)}}}
radius = {{{6.5*10^(-13)}}} answer
This is now in "scientific notation"
Notice that I increased {{{.65}}} by a factor of {{{10}}},
so I had to decrease {{{10^(-12)}}} by a factor of {{{10}}}