If the lateral area of a cylinder is 80 square centimeters and the radius of the base is 3 centimeters, what is its volume in cubic centimetres?
一个圆柱的侧面积是80平方厘米，底面半径是3厘米，它的体积是多少立方厘米．
<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">40 * 3</gadget>
<output>120</output>

<result>120</result>