The sum of the areas of a parallelogram and a triangle with the same base and height is 24 square centimeters, what is the area of the parallelogram in square centimeters?
一个平行四边形与一个等底等高的三角形，面积和是24平方厘米，平行四边形面积是多少平方厘米．
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>