A 4.7-meter-long bamboo pole is vertically inserted into the pool. The part of the bamboo pole inserted into the soil at the bottom of the pool is 0.45 meters, and the part exposed to the water is 1.8 meters. How deep is the pool?
一根4.7米长的竹竿垂直插入水池中，竹竿插入池底泥土部分是0.45米，露出水面部分是1.8米．池水深多少？
<gadget id="calculator">4.7 - 0.45 - 1.8</gadget>
<output>2.45</output>

<result>2.45</result>