Question

(c) write a formula that relates the circumference, c, of a circle to its diameter, d.
c = □

Explanation:

Step1: Recall the formula for the circumference of a circle

The circumference \( C \) of a circle is related to its diameter \( d \) by the formula involving the mathematical constant \( \pi \) (pi). The formula is derived from the definition that the ratio of the circumference to the diameter of any circle is a constant, which is \( \pi \). So, \( C = \pi d \).

Answer:

\( C = \pi d \)