The effect draws a small character below the bottom of the text.

The subscript effect draws a small character below the bottom of the text. On the other hand, superscript draws a character above the top of the text. Underline is character formatting that draws a single line under the text. A strike through draws a horizontal line through the text. A sentence case formats as a sentence with the first word being capitalized and all remaining words beginning with a lowercase letter. 

Multiply the 3 dimensions, assuming it is a rectangular cuboid, to get the volume in cm³ divide mass by volume to get density in g/cm³