Answer:
The correct answer option is: C = pi × 4.
Step-by-step explanation:
We are given the diameter of a circle to be 4 cm and we are to determine which of the given equations can be used to find its circumference.
We know that the circumference of a circle is given by: [tex]2\pi r[/tex]
If diameter is 4 cm so the radius will be 2 cm so substituting it in the above formula to get the equation.
C = 2 × pi × 2 = pi × 4
Answer:
C = π * 4
Step-by-step explanation:
The equation of a circle's circumference is C = 2πr, or C = πd, where d is the diameter of the circle. Plugging our given in, we get C = π * 4.
