Please team need your help asap with better explanation. Note: The tolerance is +_ in the 3rd significant digit.

Figure (a) gives the magnitude E(x) of the electric fields that have been set up by a battery along a resistive rod of length L = 9.00 mm (see Figure (b)). The vertical scale is set by Es = 5.20 x108 V/m. The rod consists of three sections of the same material but with different radii. (The schematic diagram of the figure (b) below does not indicate the different radii.) The radius of section 3 is 2.28 mm. What is the radius of (a) section 1 and (b) section 2? E, X=0 E (10 V/m) V (1 2 3 X=L 0 3 6 9 x (mm) (a) (b ) (a) Number Units mm (b) Number i Units mm