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Is There A Way To Know How Many Pixels You Have Selected?


I'm doing science fair right now and i need to figure out how many pixels are in a certain selection (a laso). Is there a way other than knowing the width and height, a way to know exacly how many pixels are in a selection? or even how many pixels of a certain color are in a selection? if there isnt, does anyone know a program that can do this?


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