A conical rubble pile has a bottom diameter of 2m and a height of 0.6m. If each cubic meter of gravel weighs 2 tons, what is the approximate weight of the pile of gravel?
一个圆锥形的碎石堆，底面直径是2m，高是0.6m．如果每立方米的碎石重2吨，这堆碎石大约重多少吨．
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

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

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

<gadget id="calculator">3.14 * 1 * 0.6 * (1/3)</gadget>
<output>0.628</output>

<gadget id="calculator">2 * 0.628</gadget>
<output>1.256</output>

<result>1.256</result>