Question 1205624
.


It is incorrect to ask which of these equations represents the area.


No one of these equations,  literally speaking,  represents the area.


Mathematically correctly is to say that equations A and E are correct equations 
for the width x  of the added strip.


Yes,  some of these equations originate from the equation for the area,
but after transformations,  they just do not represent the area.


.............................


Please don't think that I'm picking on words.


My writing is just the  CORRECT  mathematical verbal formulation.


Don't curse me,  just learn from me.



It is why and for what you come to this forum. &nbsp;&nbsp;&nbsp;&nbsp;( <<<--- just in case if you do not understand for what and why you come here).