Question

equivalent experience_ma.912.ar.1.2 solve the formula for the circumference of a circle, ( c = 2pi r ), for ( r ).

Explanation:

Step1: Start with the formula

We have the formula for the circumference of a circle: $C = 2\pi r$.

Step2: Isolate \( r \)

To solve for \( r \), we need to divide both sides of the equation by \( 2\pi \). So we perform the operation: $\frac{C}{2\pi}=\frac{2\pi r}{2\pi}$.

Step3: Simplify the right side

Simplifying the right side, the \( 2\pi \) in the numerator and denominator cancels out, leaving us with $r=\frac{C}{2\pi}$.

Answer:

\( r = \frac{C}{2\pi} \)