A cube oil tank with a side length of 5 decimeters is filled with oil, and it is poured into a cylindrical oil drum with a bottom area of 10 square decimeters. What is the height of this cylindrical oil drum?
一个棱长5分米的正方体油箱装满油，倒入底面积是10平方分米的圆柱油桶正好倒满，这个圆柱油桶的高是多少分米？
<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">5 * 5 * (1/2)</gadget>
<output>25/2 = around 12.5</output>

<result>25/2 = around 12.5</result>