If the base of a parallelogram is 6 cm and the height is 4 cm, what is the area in square centimeters of a triangle with the same base and height?
一个平行四边形的底是6厘米，高4厘米，与它等底等高的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">6 * 2</gadget>
<output>12</output>

<result>12</result>