If the length of the hypotenuse of an isosceles right triangle is 8 cm, what is the area of the triangle?
等腰直角三角形斜边长为8厘米，则此三角形的面积是多少平方厘米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>