Question

Which expression, when multiplied by r, produces the formula for the circumference of a circle?

Answer 1

We know, Circumference = 2πr

So, Expression multiplied by r, would be: 2π

Hope this helps!

Answer 2

`2\pi`

Explanation:

We are asked to find the expression that is multiplied to r to get the formula for the circumference of a circle.

We know that circumference of circle is
`2\pi r`.

We will divide
`2\pi r` by r to get our required expression as:

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

Upon cancelling out r, we will get:

`2\pi`

Therefore,
`2\pi` is multiplied by r, to get the formula for the circumference of a circle.