The diameter of a circle represent the distance across it when divided in half. 1 millimeter equals .04 inches (rounded to one significant figure). Therefore 12 mm equals .05 inches.
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To convert a measure in inches to a measurement in feet, you need to divide by twelve. Here's the simple formula: Inches Measurement divided by 12 = Measurement in feet
As far as I know; to equal ft. and inches (366sq. ft. and 6 inches ) if you convert this iti is 366 divided in half to give you a 12 inch depth =183 cubic ft and divide by 3 to get cubic yards = 61 cubic yards
Assuming that 1inch is your diameter, your radius is, of course, 0.5. Since the area of a circle is expressed asA=(pi)r2simply plug in the radius to this equation. You will get your area to be pi*0.25in2, which is roughly equal to 0.78539inches2.
Either pi times the diameter or pi times twice the radius (which is the diameter)
Callisto