The area of a parallelogram is 24m. If the base remains the same and the height becomes half of the original, what is its area changed to in m**2.
一个平行四边形的面积是24m，如果底不变，高变为原来的一半，则它的面积变为多少m**2．
<gadget id="calculator">24 / 2</gadget>
<output>12</output>

<result>12</result>