A cylindrical wooden stick with a base radius of 2 cm and a height of 3 cm, if it is cut longitudinally along the diameter of the base, what is the increase in the sum of the surface areas in square centimeters?
一个圆柱体木棒，底面半径2厘米，高3厘米，如果沿底面直径纵剖后，表面积之和增加多少平方厘米．
<gadget id="calculator">2 * 2 * 3 * 2</gadget>
<output>24</output>

<result>24</result>