A triangle and a parallelogram have the same area and the same base. If the height of the parallelogram is 12 cm, what is the height of the triangle in cm?
一个三角形和一个平行四边形面积相等，底也相等．如果平行四边形的高是12厘米，那么三角形的高是多少厘米．
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<result>24</result>