There is a conical sand pile on the construction site, the circumference of the bottom is 31.4 meters, the height is 3.6 meters, and the sand weight per cubic meter is 1.5 tons. How many tons does this pile of sand weigh (take π as 3.14).
工地上有一圆锥形的砂堆，底的周长是31.4米，高是3.6米，每立方米的砂重1.5吨．这堆砂重多少吨(取π为3.14)．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">31.4 / 6.28</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">(1/3) * 3.14 * 25 * 3.6</gadget>
<output>94.2</output>

<gadget id="calculator">94.2 * 1.5</gadget>
<output>141.3</output>

<result>141.3</result>