The sum of the lengths of the two sides of an isosceles right triangle is 24cm, what is its area in cm**2.
一个等腰直角三角形的两条直角边长度之和是24cm，它的面积是多少cm**2．
<gadget id="calculator">24 / 2</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>