If a cylinder has a volume of 12.56 cubic centimeters and a height of 4 centimeters, what is the area of its base in square centimetres?
一个圆柱体，它的体积是12.56立方厘米，高是4厘米，它的底面积是多少平方厘米．
<gadget id="calculator">12.56 / 4</gadget>
<output>3.14</output>

<result>3.14</result>