The three sides of a right triangle are 6 decimeters, 8 decimeters, and 10 decimeters respectively. What is its area in square decimeters?
一个直角三角形的三条边分别长6分米，8分米，10分米，它的面积是多少平方分米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

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

<result>24</result>