Use a bamboo pole to measure the depth of the pool water. The bamboo pole is 10 meters long, the part above the water is 2.33 meters long, and the part that enters the mud is 0.69 meters long. Do you know how deep the pool is? How deep is the water in meters?
用一根竹竿测量池水的深度，竹竿全长10米，露出水面部分长2.33米，入泥部分长0.69米．你知道池水有多深吗？水深多少米？
<gadget id="calculator">10 - 2.33 - 0.69</gadget>
<output>6.98</output>

<result>6.98</result>