Using the formula for the circumference of the circle, it is found that the diameter is of 21 m.
The circumference of a circle of diameter d is given by:
[tex]C = \pi d[/tex]
In this problem, we have that the circumferece is of C = 65.97 m, hence we can solve it's equation to find the diameter d:
[tex]\pi d = 65.97[/tex]
[tex]d = \frac{65.97}{\pi}[/tex]
[tex]d = 21[/tex]
From this, we get that the diameter is of 21 m.
More can be learned about the circumference of a circle at https://brainly.com/question/17326298
