A bamboo pole is 5.4 meters long, and it is inserted into a pool. The part that enters the mud is 0.35 meters, and the part above the water is 1.2 meters. How deep is the pool?
一根竹竿长5.4米，把它直插入一水池中，入泥部分是0.35米，露出水面1.2米，池水有多深？
<gadget id="calculator">4.8 - 0.35 - 1.2</gadget>
<output>3.25</output>

<result>3.25</result>