If the area of a parallelogram is 28 cm2 larger than the area of a triangle with the same base and height, what is the area of the triangle?
一个平行四边形的面积比与它等底等高的三角形面积大28平方厘米，则三角形的面积是多少平方厘米．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">28 / 1</gadget>
<output>28</output>

<result>28</result>