A conical sand mound is 15m high, the bottom circumference is 62.8m, and the sand weighs 1.4 tons per cubic meter. How many tons does the mound weigh?
一圆锥形沙土堆高15m，底面周长62.8m，每立方米沙土重1.4吨．该土堆重多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">62.8 / 3.14 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">(1/3) * 3.14 * 100 * 15</gadget>
<output>1_570</output>

<gadget id="calculator">1_570 * 1.4</gadget>
<output>2_198</output>

<result>2_198</result>