The base length of a triangle is 8.5 meters and the height is 3.8 meters. What is its area in square meters?
一个三角形的底长为8.5米，高为3.8米，它的面积是多少平方米．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">8.5 * 3.8 * (1/2)</gadget>
<output>16.15</output>

<result>16.15</result>