Given that the area of a triangle is 12 square centimeters, what is the area of a parallelogram with the same base and height in square centimeters?
已知一个三角形的面积是12平方厘米，和它等底等高的平行四边形的面积是多少平方厘米．
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<result>24</result>