No... the missing dollar riddle asks people to confuse cash inflows and outflows by changing the subjective interpretation of a middleman, who starts out being an outflow (he/she is "part of the business") and then is treated like an inflow (he/she is "one of the money-havers"), it's essentially a linguistic puzzle in an accounting context, one person can be referred to in two different ways.
This is a calculus puzzle, you have approximately 13 boys "missing a tiny slice" of themselves versus 12 boys with "an extra little slice" of themselves... it's more clever than just "we take the slices and reassemble them", it's "the slices slowly sweep across the boys' body so that when we slide the circles we essentially accumulate a whole 'second boy' inside the internal circle." Sort of like how the missing square puzzle has a clever way to have two almost-parallel lines which are not parallel hiding a long skinny rhombus containing the extra area, but the rearrangement exposes it in a much more visually arresting form as a whole missing square.
This one is closer to the missing square puzzle, https://en.wikipedia.org/wiki/Missing_square_puzzle .
This is a calculus puzzle, you have approximately 13 boys "missing a tiny slice" of themselves versus 12 boys with "an extra little slice" of themselves... it's more clever than just "we take the slices and reassemble them", it's "the slices slowly sweep across the boys' body so that when we slide the circles we essentially accumulate a whole 'second boy' inside the internal circle." Sort of like how the missing square puzzle has a clever way to have two almost-parallel lines which are not parallel hiding a long skinny rhombus containing the extra area, but the rearrangement exposes it in a much more visually arresting form as a whole missing square.