A cuboid with a square base and a height of 12 cm increases its surface area by 8 cm2 if its height increases by 2 cm. What is its volume?
一个底面是正方形，高是12厘米的长方体，若高增加2厘米，它的表面积就增加8平方厘米．它的体积是多少？
<gadget id="calculator">8 / 4 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 * 1 * 12</gadget>
<output>12</output>

<result>12</result>