Cut a triangle with the same base and height from a parallelogram. The area of the triangle is 6 square centimeters. What is the minimum area of the original parallelogram?
从一个平行四边形中截取一个与它等底等高的三角形，三角形的面积是6平方厘米，问原来的平行四边形的面积最少是多少？
<gadget id="calculator">6 * 2</gadget>
<output>12</output>

<result>12</result>