There is a conical pile of sand on the construction site, the height is 1.5 meters, the radius of the bottom surface is 6 meters, and the sand weighs 3 tons per cubic meter. How many tons does this pile of sand weigh?
工地上有一个圆锥形的沙堆，高是1.5米，底面半径是6米，每立方米的沙重3吨，这堆沙重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">(1/3) * 3.14 * 36 * 1.5</gadget>
<output>56.52</output>

<gadget id="calculator">56.52 * 3</gadget>
<output>169.56</output>

<result>169.56</result>