The three sides of a right triangle are 3 cm, 4 cm, and 5 cm respectively. What is the area of this right triangle in square centimeters?
一个直角三角形的三条边分别是3厘米、4厘米、5厘米，这个直角三角形的面积是多少平方厘米
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<result>6</result>