A conical sand pile has a bottom circumference of 18.84 meters and a height of 15 meters. Each cubic meter of sand weighs 1.5 tons. How many tons does this pile of sand weigh?
一个圆锥形沙堆，底面周长18.84米，高15米，每立方米沙重1.5吨，这堆沙共重多少吨？
<gadget id="calculator">18.84 / 3.14 / 2</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 3.14 * 3 * 3 * 15 * 1.5</gadget>
<output>211.95</output>

<result>211.95</result>