The height of a cone of wood is 12 centimeters and its volume is 16.8 cubic centimeters. What is the area of its base in square centimeters?
一个圆锥体木块的高12厘米，体积是16.8立方厘米，它的底面积是多少平方厘米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">16.8 / (1/3) / 12</gadget>
<output>4.2</output>

<result>4.2</result>