When it is produced it is processed through a tube, giving it a circular shape.
None, but we have a couple square-shaped.
There are various reasons that manholes are shaped like a circle. For example, it is much easier to dig a circular hole.
"Circular", meaning shaped like a circle.
it was a circle
A closed semi-circle.
A circle perhaps
Circle shaped looking bacteria.
eclipse
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Well the shape looks a lot like a circle spiral...
Yes, ring galaxies are actually ring-shaped, with a circle-like appearance.
because for any person to get inside a manhole, you would think it was shaped like a round circle.