A conical pile of sand is 1.5 meters high, the radius of the bottom is 2 meters, and each square meter of sand weighs about 1.5 tons. How many tons does this pile of sand weigh?
一个圆锥形沙堆高1.5米，底面半径是2米，每方米沙约重1.5吨，这堆沙约重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 1.5</gadget>
<output>6.28</output>

<gadget id="calculator">6.28 * 1.5</gadget>
<output>9.42</output>

<result>9.42</result>