A cone-shaped pile of sand has a diameter of 8 meters at the bottom and a height of 3 meters. If each cubic meter of sand weighs 15 kilograms, how many kilograms does the pile of sand weigh?
一个圆锥形沙堆，底面直径8米，高3米，如果每立方米沙重15千克，这堆沙一共重多少千克？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 3.14 * 16 * 3 * 15</gadget>
<output>753.6</output>

<result>753.6</result>