Find the total water volume, compute the water height, then find the gap from the brim.<br><br>
&bull; Tank volume = 36 × 25 × 24 = 21600 cm&sup3;<br>
&bull; Initial water = \(\frac{3}{8}\) × 21600 = 8100 cm&sup3;<br>
&bull; Water added = 15 × 750 ml = 11250 cm&sup3;<br>
&bull; Total water = 8100 + 11250 = 19350 cm&sup3;<br>
&bull; Base area = 36 × 25 = 900 cm&sup2;<br>
&bull; Water height = 19350 ÷ 900 = 21.5 cm<br>
&bull; Distance from brim = 24 − 21.5 = 2.5 cm<br><br>
Final Answer: 2.5 cm