A cylinder has a base area of 5 cm2 and a height of 4 cm, what is the volume of the cylinder in cubic centimeters?
一个圆柱的底面积为5平方厘米，高为4cm，这个圆柱的体积为多少立方厘米．
<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<result>20</result>