Take a piece of white paper with a length of 12.56 cm and a width of 9 cm to form a cylindrical paper tube with the largest volume. What is the lateral area of the paper tube in square centimeters?
把一张长12.56厘米，宽9厘米的白纸，围成一个体积最大的圆柱形纸筒，纸筒的侧面积是多少平方厘米．
<gadget id="calculator">12.56 * 9</gadget>
<output>113.04</output>

<result>113.04</result>