The three sides of a right triangle are 6 cm, 8 cm and 10 cm respectively, what is its area?
一个直角三角形的三条边分别是6厘米、8厘米和10厘米，它的面积是多少．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">6 * 4</gadget>
<output>24</output>

<result>24</result>