A conical sand pile has a bottom circumference of 94.2m, a height of 3m, and a cubic meter of sand weighing 1.4 tons. How many tons does this pile of sand weigh?
一个圆锥形的沙堆，底面周长是94.2m，高是3m，每立方米沙重1.4吨．这堆沙子重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">94.2 / 3.14 / 2</gadget>
<output>15</output>

<gadget id="calculator">15 ** 2</gadget>
<output>225</output>

<gadget id="calculator">(1/3) * 3.14 * 225 * 3</gadget>
<output>706.5</output>

<gadget id="calculator">706.5 * 1.4</gadget>
<output>989.1</output>

<result>989.1</result>