A region in space containing cargo which is distributed sphericallyso that the stocking load ρ is given by the equotations:ρ = a for r<=R/2ρ = 2a(1-r/R) for R/2<=r<=Rρ=0 for r>=RThe total charge Q is 3*10^-17 C, the radius R of the overalldistribution is 2*10^-14 m and a is a constant which has dimensionsof C / m^3. Determine the constant aasfunction of Q and R and the numerical value.function of Q and R and the numerical value. b) Using theGauss's law find an expression for the measure of the electricfield as a function of distance rfrom the center of distribution. Do this separately for each of thethree areas.Make sure that your results agree with the borders of the areas.What fraction oftotal load is contained within the region r<R/2?please help me i spent 3 hours but cant find the desired solution