The two sides of a parallelogram are 10cm and 6cm respectively, and the height of one of them is 9cm. So what is the area of this parallelogram in square centimetres?
平行四边形的两条边分别是10cm和6cm，其中一条高是9cm．那么这个平行四边形的面积是多少平方厘米．
<gadget id="calculator">6 * 9</gadget>
<output>54</output>

<result>54</result>