Question: how to find the circumference of a circle
Option 0: The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.    If a circle has a diameter of 4, its circumference is 3.14*4=12.56.    If you know the radius, the diameter is four times as large.
Option 1: The circumference of a circle can be found by multiplying pi ( π = 3.14 ) by the diameter of the circle.    If a circle has a diameter of 4, its circumference is 3.14*4=12.56.    If you know the radius, the diameter is twice as large.
Answer: 1