22 x 22 =
By Long Multiplication
22
x22
440
=484
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484 ft2. This is because, to find square footage, (or square miles, kilometers, meters, inches, etc.) you multiply the two numbers together. 22x22 is equal to 484. Then you add the ft2 to the end of the number and/or measurement.
In a right triangle, a2 + b2 = c2. So, the hypoteneuse, c = (a2 + b2)½. c = (222 + 222)½ = 968½ = (112 x 23)½ = 11 x 2 x 2½ = 22 x 2½ = 22 x 1.4142135623730950488016887242097... = 31.112698372208091073637151932613...