Xiaoqiang wants to make a fish tank with a side length of 5 decimeters without a cover, how many square decimeters of glass do he need at least?
小强要制作一个棱长为5分米的正方体无盖的鱼缸，至少需要多少平方分米的玻璃？
<gadget id="calculator">5 * 5 * 5</gadget>
<output>125</output>

<result>125</result>