A conical sand pile has a bottom circumference of 12.56 meters and a height of 5.4 meters. Each cubic meter of sand weighs 1.7 tons. How many tons does this pile of sand weigh?
一个圆锥形沙堆，底面周长12.56米，高5.4米，每立方米沙重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">12.56 / 3.14 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">(1/3) * 3.14 * 4 * 5.4</gadget>
<output>22.608</output>

<gadget id="calculator">22.608 * 1.7</gadget>
<output>38.4336</output>

<result>38.4336</result>