Square Measures definition

1 square inch = 6.452 square=~ s/r//g centimeters144 square inches = 1 square foot = 929.03 square centimeters  =~ s/r//g 9 square feet = 1 square yard = .8361 square meter  30 1/4 square yards = 1 square rod = 25.292 square meters  160 square rods or 4,840 square yards or 43,560 square feet = 1 acre = .4047 hectare  640 acres = 1 square mile = 259 hectares or 2.590 square kilometers