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.
The diameter of the circle will be: 26.1 inches.
If the circumference of a circle is 28 inches the diameter is: 8.913 inches (circumference divided by Pi = diameter).
Frisbees come in different sizes. The diameter can be 8 inches, 10 inches, 12 inches, or another diameter.
If a circle has a diameter of 12.8 inches its circumference is: 40.21 inches (circumference = diameter x Pi).
25mm
A mild steel ERW tube 25mm diameter with 2mm wall with 1000 mm length weighs about 1.2kg
Between 24mm and 25mm, or about an inch.
A circumference of 78.54 mm
25 mm * 18mm = 0.98 inches * 0.71 inches.
25mm = about 0.984 inches.
No.
Circumference = 25*pi =78.53981634 or about 78.5 mm
Type your answer here... 3.85
If 16mm is the overall diameter of the cable, yes - If that's the diameter of one core, then no.
Half a meter
The inches in a diameter = 2 X inches in the radius. Or, inches in a diameter = inches in circumference / pi