A conical pile of sand has a circumference of 25.12m at the bottom and a height of 4.5m. If each cubic meter weighs 700kg, how many tons does the pile of sand weigh?
一个圆锥形的沙堆，底面周长是25.12m，高4.5米，如果每立方米重700千克，这堆沙子重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">25.12 / 6.28</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">700 / 1_000</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">(1/3) * 3.14 * 16 * 4.5 * (7/10)</gadget>
<output>52.752</output>

<result>52.752</result>