There is a cone-shaped pile of sand, the radius of the bottom is 2 meters, the height is 1.2 meters, and the weight of each cubic meter of sand is about 1.7 tons. How many tons are there in this pile of sand?
有堆圆锥形的沙子，底面半径是2米，高是1.2米，每立方米沙约重1.7吨，这堆沙共有多少吨？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

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

<gadget id="calculator">3.14 * 4 * 1.2 * (1/3) * 1.7</gadget>
<output>8.5408</output>

<result>8.5408</result>