Answer:
Around 15.12
Step-by-step explanation:
The equation of the circumference of a circle is C=2πr
So, we can start off by looking for the radius since diameter is twice the radius
Next, divide both sides of the equation by 2π to get the radius by itself
Then, plug in all the given values and you should get 47.5/6.28=r
Put that into the calculator you you get around 7.56
Back to diameter, just multiply the radius by two and you get around 15.12
Hope this helps! :)