A conical pile of yellow sand has a bottom diameter of 2 meters and a height of 3 meters. Each cubic meter of yellow sand weighs 2 tons. How many tons does this pile of sand weigh?
一堆圆锥形黄沙，底面直径是2米，高3米，每立方米的黄沙重2吨，这堆沙重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

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

<gadget id="calculator">3.14 * 2</gadget>
<output>6.28</output>

<result>6.28</result>