Answer: 15
Step-by-step explanation: To find the diameter of a circle, we can use the formula: Diameter = Circumference / π.
Given that the circumference of the circle is 47.1m, we can substitute this value into the formula: Diameter = 47.1m / π
Now, let's calculate the diameter using an approximation of π as 3.14:
Diameter ≈ 47.1m / 3.14 ≈ 15m