Find the total volume, subtract the volume of the void.<br><br>
&bull; Total volume = 30 × 20 × 12 = 7200 cm&sup3;<br>
&bull; Void volume = 10 × 5 × 12 = 600 cm&sup3;<br>
&bull; Remaining volume = 7200 − 600 = 6600 cm&sup3;<br><br>
Final Answer: 6600 cm&sup3;