A hollow cylindrical box of length 1 m and area of cross-section 25 is placed in a three dimensional coordinate system as shown in the figure

A hollow cylindrical box of length 1 m and area of cross-section 25 is placed in a three dimensional coordinate system as shown in the figure. The electric field in the region is given by


The last ans is wrong
Correct ans id 0.2500-0.1250=0.1250