Is the Earth roughly a sphere?

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As far as water goes I answered that question numerous times. Engineering of bridges, roads etc all take into account curvature. So now here we are at the dome the anti round earth shills use. Yes, a dome. At least they present something though I give them credit for that. They try to back up all the shill they spout

Should be easy for you then to provide a physical practical demonstration of a standing body of water with the surface naturally bending.