The length of two adjacent sides of a parallelogram is 9 decimeters and 12 decimeters, and the height of one of them is 10 decimeters. What is the area of this parallelogram?
一个平行四边形相邻两条边的长度是9分米和12分米，其中一条高是10分米，这个平行四边形的面积是多少．
<gadget id="calculator">9 * 10</gadget>
<output>90</output>

<result>90</result>