A pile of yellow sand is piled into the shape of a cone with a base diameter of 4 meters and a height of 0.5 meters. 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，底面直径是4米，高0.5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">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 0.5 * 2.4</gadget>
<output>5.024</output>

<result>5.024</result>