When you double the diameter, the circumference is also doubled.
Since the equation for circumference is pi*d then if you double the diameter the circumference will be doubled.
The circumference also doubles.
It will make the circumference of the circle bigger or smaller
If the diameter of a circle is 69mm then the circumference is: 216.8mm (diameter x pi = circumference).
Diameter of a circle = circumference/pi
Diameter of a circle = circumference/pi
The circumference of a 13.5 diameter circle is: 42.41(diameter x pi = circumference).
If a circle has a circumference of 8 the diameter is: about 2.546 (circumference divided by pi = diameter).
three times
Circumference and diameter are directly proportional. Doubling one doubles the other, and the same applies for any multiplier.
The circumference of a circle if the diameter is 12cm is 37.7cm