There is a pile of crushed stones approximately in the shape of a cone. The circumference of the bottom surface is 12.56 meters and the height is 0.6 meters. If the crushed stones weigh 1.5 tons per cubic meter, how many tons does this pile of crushed stones weigh?
有一个近似于圆锥形状的碎石堆，底面周长是12.56米，高是0.6米，如果每立方米碎石重1.5吨，这堆碎石大约重多少吨．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12.56 / 3.14 / 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>