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A comment on Why Is Hydroelectricity So Green, and yet Unfashionable?. Parent comment

Re:Why Is Hydroelectricity So Green, and yet Unfashionable? by im3w1l on Thursday October 27, 2022 @06:29PM (#33364854)
Excavating a circle of area A costs O(A). Building a wall around a circle of area A costs O(A^0.5).
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