cuboid with a length of 6 decimeters, a width of 4 decimeters, and a height of 10 decimeters contains a conical object with a base area of 18 square decimeters. The cuboid container is filled with water, and when the object is taken out, the water surface The height is 8 decimeters, what is the length of the cone object?
一个长6分米，宽4分米，高10分米的长方体，里面放有一个底面积为18平方分米的圆锥体物件，在长方体容器内盛满水，再把物件拿出来后，水面高度是8分米，圆锥体物件的长度是多少分米？
<gadget id="calculator">10 - 8</gadget>
<output>2</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / (1/3) / 18</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 * 4 * (1/3)</gadget>
<output>8</output>

<result>8</result>