Code point
U+33A0
Glyph appearance depends on your fonts.
U+33A0
So<square> 0063 006D 00B2U+33A0 SQUARE CM SQUARED is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the CJK Compatibility block.
Choose the representation you need, then copy its value.
U+33A0
13216
㎠
㎠
E3 8E A0
33A0
000033A0
%E3%8E%A0
\u33A0
\u33A0
\u33A0
\33A0