A cuboid has a length of 28 decimeters, a width of 15 decimeters, and a height of 12 decimeters. Now it is cast into a cone with a base area of 90 square decimeters. How many decimeters is the height of the cone?
一个长方体的长28分米，宽15分米，高12分米．现将它熔铸成底面面积是90平方分米的圆锥体，圆锥体的高是几分米？
<gadget id="calculator">28 * 15 * 12</gadget>
<output>5_040</output>

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

<gadget id="calculator">5_040 / (1/3) / 90</gadget>
<output>168</output>

<result>168</result>