Parallelograms are easily deformed. A rectangular wooden frame with a length of 20 cm and a width of 12 cm is drawn into a parallelogram with a height of 15 cm. What is the area of this parallelogram in square centimeters?
平行四边形容易变形．一个长方形木框，长20厘米、宽12厘米，把它拉成一个高为15厘米的平行四边形，这个平行四边形的面积是多少平方厘米．
<gadget id="calculator">12 * 15</gadget>
<output>180</output>

<result>180</result>