Question

Which is an equivalent equation solved for r?

The circumference of a circle can be found using the formula C = 2πr.

r=Cπ
r=C(2π)
r= C over 2π
r= 2π over c

Answer 1

Answer: r= C over 2π or
`r=(C)/(2\pi)`

Explanation:

Formula to find the circumference of a circle is given by :-

`C=2\pi r`, where r is the radius of the circle .

To find the formula for r , we need to divide both sides by
`2\pi`, we get

`r=(C)/(2\pi)`

Hence, an equivalent equation solved for r will be :-

`r=(C)/(2\pi)` i.e. r= C over 2π

Answer 2

r= C over 2π

Explanation:

C = 2πr

To solve for r, divide each side by 2π

C/ 2π = 2πr/ 2π

C/ 2π = r