Answer:
d = 2873.5 feet
Explanation:
Given that,
The distance around a meteor crater is 9,031 ft.
We need to find the diameter of the crater. The circumference of a circle is given by :

Where
r is the radius of the circle
So,

Since,
Diameter, d = 2r

So, the diameter of the crater is equal to 2873.5 feet.