Question

To find the circumference of a circle, the measurement of the circle’s:

radius or diameter must be known.

area must be known.

base or height must be known.

tangent must be known.

None of these choices are correct.

Answer 1

Answer: Radius or Diameter

Step-by-step explanation: The formula for circumference is diameter times pi. Since radius is half of diameter, you could still easily find the circumference. You could also find it with area, but that involves multiple formulas and a lot of math. I hope this helped :)