A parallelogram card has a base of 7 cm and a height of 8 cm. What is the area of this card in square centimeters?
一平行四边形卡片，底是7厘米，高是8厘米，这张卡片的面积是多少平方厘米．
<gadget id="calculator">7 * 8</gadget>
<output>56</output>

<result>56</result>