A pile of conical yellow sand has a circumference of 31.4m at the bottom and a height of 7.2m. Each cubic meter of yellow sand weighs 1.5 tons. How many tons does this vertebral yellow sand weigh?
一堆圆锥形黄沙，底面周长是31.4m，高是7.2m，每立方米黄沙重1.5吨，这椎黄沙重多少吨？
<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">31.4 / 6.28</gadget>
<output>5</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">(1/3) * 3.14 * 25 * 7.2 * 1.5</gadget>
<output>282.6</output>

<result>282.6</result>