Question

Which of the following is involved in an informal argument for the formula for the circumference of a circle? aPerimeter bPi (π) cChord dArea

Answer 1

The formula for the circumference, C, of a circle is

`C=2\pi r`

From the above formula, only π is involved in the informal argument of the formula for the circumference of a circle.

Hence, the answer is π (option B)