1 square meter = 10.764 square feet (rounded)
462 square meters = 4,972.927 square feet (rounded)
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21-ft x 22-ft = 462 ft2
Since a foot is equal to 12 inches, you would divide 462 by 12. 462/12=38.5 feet
To convert inches to feet just divide by 12 (since there are 12 inches per foot) -462 / 12 = 38.5 feet or 38 feet 6 inches.
21.494185
Using Pythagoras: 462+282 = 2900 and the square root of this is the diagonal which is about 53.852 feet rounded to 3 decimal places