A cylindrical container filled with water has a bottom radius of 5 cm, a depth of 20 cm, and a water depth of 15 cm. Put an iron cylinder with a bottom radius of 2 cm and a height of 17 cm vertically into the container. Find the current time of the container What is the depth of the water in centimeters?
一个盛有水的圆柱形容器，底面内半径为5厘米，深20厘米，水深15厘米，今将一个底面半径为2厘米，高为17厘米的铁圆柱垂直放入容器中，求这时容器的水深是多少厘米？
<gadget id="calculator">17 * 0.16</gadget>
<output>2.72</output>

<gadget id="calculator">15 + 2.72</gadget>
<output>17.72</output>

<result>17.72</result>