in coulombs law the magnitude that is squared do you square

in coulombs law, the magnitude that is squared do you square the increments (i.e. cm^2) or (10^-2)^2

Solution

first convert separation distance in to metres.i.e whether increments are given centi metre(cm) or milli metre(mm),you must apply square in metres(m) only.so we convert cm or mm in to metres before squares incremental.