The diameter of the circle is 30 feet.
What is diameter?
The center of the circle is the midpoint of a line segment that connects two points on the circle's perimeter, and this line segment is indicated by the diameter of a circle.
The diameter of a circle is precisely equal to twice the radius' length.
Let us suppose the diameter of a circle is D then, the area is computed according to the formula
[tex]A = \frac{\pi D^2}{4}[/tex]
where
A is the area and D is the diameter.
Plug A = 225 pi in the above equation,
[tex]225 \pi =\frac{\pi D^2}{4} \\225 = \frac{D^2}{4} \\D^2 = 900\\D = 30[/tex]
Hence, the diameter of the circle is 30 feet.
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