Question

if you know the circumference of a circle, which step(s) can you follow to find its radius? a. divide by 2. b. divide by π. c. divide by π, then divide by 2. d. divide by 2, then multiply by π.

Explanation:

Step1: Recall circumference formula

$C = 2\pi r$ (where $C$ is circumference and $r$ is radius)

Step2: Solve for radius

$r=\frac{C}{2\pi}$, which means first divide $C$ by $\pi$ then divide the result by 2.

Answer:

C. Divide by $\pi$, then divide by 2.