The base of a parallelogram is 5.5 meters and the height is 8 meters. What is the area in square meters of the triangle with the same base and height?
一个平行四边形的底是5.5米，高是8米，与它等底等高的三角形面积是多少平方米．
<gadget id="calculator">8 / 2</gadget>
<output>4</output>

<gadget id="calculator">5.5 * 4</gadget>
<output>22</output>

<result>22</result>