Coordinates are set up as (x,y) so you would first look at the x value, which is located at the horizontal line, of yellow which is -3 and then the y value, which is located at the vertical line, of yellow which is 2 so you get (-3,2)
Thickness of the plate before polishing = 2.342 Thickness of the plate after polishing. = 2.087 How much was removed = 2.342- 2.087 = 0.255 Hence , the answer 0.255 which is option B
