g)
(%i10) centigram*inch/minutes^2;
                                    %in cg
(%o10)                              ------
                                        2
                                    %min
</pre>
<p>The setting of units is quite flexible.  For example, if we want to get back to
kilograms, meters, and seconds as defaults for those dimensions we can do:
</p>
<pre class="example">(%i11) setunits([kg,m,s]);
(%o11)                               done
(%i12) centigram*inch/minutes^2;
              