What is the area of an isosceles right triangle whose two sides are 2.6 cm respectively?
一个等腰直角三角形，两个直角边分别是2.6厘米，它的面积是多少平方厘米．
<gadget id="calculator">2.6 / 2</gadget>
<output>1.3</output>

<gadget id="calculator">2.6 * 1.3</gadget>
<output>3.38</output>

<result>3.38</result>