A conical sand pile has a base circumference of 12.56 meters and a height of 0.9 meters. Use this pile of sand to pave a 3 cm thick road on a 10 meter road, how many meters can you pave?
一个圆锥形沙堆，底面周长是12.56米，高是0.9米．用这堆沙在10米的公路上铺3厘米厚的路面，能铺多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3 / 100</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">10 * (3/100)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">0.9 / (3/10)</gadget>
<output>3</output>

<gadget id="calculator">(1/3) * 3.14 * 4 * 3</gadget>
<output>12.56</output>

<result>12.56</result>