Answer:
Circumference = 36π
Explanation:
The formula for circumference is C = πd, where
- C is the circumference,
- and d is the diameter
We know that the diameter is simply 2 * the radius, so the diameter of the circle is 36 cm as 2 * a radius of 18 cm = 36 cm.
To find the circumference in terms of π, we simply multiply 36 and π, but don't simplify, approximate, etc.
Thus, the circumference in terms of π is C = 36π