The area of the water well is [tex]4\pi r^2[/tex]
How to determine the area?
The radius is given as:
Radius, R = 2r
The area of the water well is calculated using:
[tex]A = \pi R^2[/tex]
This gives
[tex]A = \pi (2r)^2\\\\\\[/tex]
Evaluate the expression
[tex]A = 4\pi r^2[/tex]
Hence, the area of the water well is [tex]4\pi r^2[/tex]
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