There is a cylindrical pool, insert a 10-meter-long bamboo pole vertically into the pool, carve a mark with a knife at the junction of the bamboo pole and the water surface, take it out, then turn the bamboo pole upside down, and do it again according to the above method. If the distance between the two marks is (1/5) the length of the entire bamboo pole, then how many meters is the water depth in the pool?
有一个圆柱形水池，用一根长10米的竹竿竖直地插入池中，在竹竿与水面的交接处用刀刻上记号后取出，然后将竹竿倒过来，依照上述方法再做一次．如果两个记号间的距离是整个竹竿长度的(1/5)，那么，水池中水深多少米？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">10 * (1/5)</gadget>
<output>2</output>

<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<result>6</result>