conical pile of sand is 0.6 meters high and has a base diameter of 4 meters. If each cubic meter of sand weighs about 1.5 tons, how many tons does the pile of sand weigh?
一个圆锥形的砂堆，高0.6米，底面直径是4米．如果每立方米的砂子约重1.5吨，那么这堆砂子重多少吨？
<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 * 0.6</gadget>
<output>2.512</output>

<gadget id="calculator">2.512 * 1.5</gadget>
<output>3.768</output>

<result>3.768</result>