A conical pile of sand has a base area of 25 square meters and a height of 1.8 meters. Use this pile of sand to pave a road with a thickness of 5 cm on a road with a width of 8 meters. How many meters can you pave? (solution with equation)
一个圆锥形的沙堆，底面积是25平方米，高1.8米．用这堆沙在8米宽的公路上铺5厘米厚的路面，能铺多少米？(用方程解答)
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) * 25 * 1.8</gadget>
<output>15</output>

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">8 * (1/20)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">15 / (2/5)</gadget>
<output>75/2 = around 37.5</output>

<result>75/2 = around 37.5</result>