No.
12 by 12 inches
12 inches
Twelve inches is a length. It can be a diameter, but if it is a diameter, you would simply say 'The circle is 12 inches diameter'. So; how big is it - it is 12 inches.
12 inches in a foot9x12= 108 inches
12 inches
12 inches................<33
12 inches
12 inches
12 mm = 0.47 inches.
To convert inches to feet just divide by 12 (since there are 12 inches per foot) -38 / 12 = 3.17 feet
12 inches
It is 144 (12*12) sq inches.