A conical pile of sand is 1.5 meters high and has a base radius of 3 meters. Each cubic meter of sand weighs about 1.7 tons. How many tons does this pile of sand weigh?
一个圆锥形的沙堆，高是1.5米，底面半径是3米，每立方米的沙约重1.7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">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">(1/3) * 3.14 * 9 * 1.5</gadget>
<output>14.13</output>

<gadget id="calculator">14.13 * 1.7</gadget>
<output>24.021</output>

<result>24.021</result>