pile of conical yellow sand has a circumference of 25.12m at the bottom and a height of 1.5m. Each cubic meter of yellow sand weighs 2 tons. How many tons does the cone-shaped yellow sand weigh?
一堆圆锥形黄沙，底面周长是25.12m，高是1.5m，每立方米黄沙重2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">25.12 / 3.14 / 2</gadget>
<output>4</output>

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

<gadget id="calculator">(1/3) * 3.14 * 16 * 1.5 * 2</gadget>
<output>50.24</output>

<result>50.24</result>