It's much easier to just pay attention
idegenszavak @ idegenszavak @sh.itjust.works Posts 0Comments 303Joined 2 yr. ago

idegenszavak @ idegenszavak @sh.itjust.works
Posts
0
Comments
303
Joined
2 yr. ago
Deleted
Genius
engineers use d²π/4 as you can't measure the radius of a pipe or a similar 3d solid object only diameter.