The perimeter of a square is 48 cm, cut it into two identical triangles, find the area of each triangle.
一个正方形的周长是48厘米，把它剪成两个完全一样的三角形，求每个三角形的面积．
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">12 * 6</gadget>
<output>72</output>

<result>72</result>