The area of a triangle is 12.5dm**2 less than the area of a parallelogram with the same base and height. What is the area of the parallelogram in dm**2?
一个三角形的面积比与它等底等高的平行四边形的面积少12.5dm**2，平行四边形的面积是多少dm**2．
<gadget id="calculator">12.5 * 2</gadget>
<output>25</output>

<result>25</result>