A vegetable field is an isosceles right triangle with a side of 12 meters. What is the area of this vegetable field in square meters?
一块等腰直角三角形的菜地，直角边为12米，这块菜地的面积是多少平方米．
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

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

<result>72</result>