Cut along the diagonal of the square, and the longest side of the triangle obtained is 8 cm. What is the area of the triangle?
沿正方形的对角线剪开，得到的这个三角形的最长边是8厘米，这个三角形的面积是多少．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">32 / 2</gadget>
<output>16</output>

<result>16</result>