<< no, it should display "area = 12434 pixels" not "pixels squared"
example (for the purpose of this example [] will be a pixel):
[] <- 1 pixel
[][][][] <- 4 pixels, not "4 pixels squared"
a pixel is a rectangular area, not a straight line distance. >>
But they're saying that each pixel equals 1 unit. Which means that each square is 25 units by 25 units, or 625 units (or in this case pixels) squared.
EDIT: Just change the word "pixels" to "units" if it bothers you.