Question

the formula C = 2πr relates the radius r of a circle to its circumference C. Solve the formula for r.

Answer 1

C = 2 * pi * r....for r
divide both sides by 2  * pi
C / (2(pi)) = r

Answer 2

Answer:

The value of r from the provided formula is $\frac{C}{2\pi} =r$.

Step-by-step explanation:

Consider the provided formula.

$C = 2\pi r$

Where  r is radius of a circle and C is circumference.

Now solve the formula for r.

Isolate the variable r by dividing 2π from both side.

$\frac{C}{2\pi} =\frac{2\pi r}{2\pi}$

$\frac{C}{2\pi} =r$

Thus, the value of r from the provided formula is $\frac{C}{2\pi} =r$.