cone-shaped sand pile has a bottom diameter of 8 meters and a height of 12 decimeters. How thick can the sand be spread on a road with a length of 31.4 meters and a width of 8 meters?
一个圆锥形沙堆底面直径8米，高12分米，把这些沙子铺在一条长31.4米，宽8米的道路上，能铺多厚？
<gadget id="calculator">6.4 / 0.8</gadget>
<output>8</output>

<result>8</result>