Answer: OC = πx4
Explanation:
This question is incomplete, the correct question is
The diameter of a circle is 4 cm. Which equation can be used to find its circumference?
OC = πx2
OC= πx4
4
Answer,
Since the diameter is given as 4cm
Also,
The circumference of a circle OC = π x diameter
Therefore, OC = πx4