A pile of yellow sand is piled into the shape of a cone, with a bottom circumference of 18.84 meters and a height of 5 decimeters. If each cubic meter of yellow sand weighs 2.4 tons, how many tons does this pile of yellow sand weigh?
一堆黄砂堆成圆锥体的形状，底面周长18.84米，高5分米．如果每立方米的黄砂重2.4吨，这堆黄砂重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 0.5</gadget>
<output>4.71</output>

<gadget id="calculator">2.4 * 4.71</gadget>
<output>11.304</output>

<result>11.304</result>