The base of a parallelogram is 12 cm, and the base is 3 times the height. What is the area of the parallelogram in square centimeters?
一个平行四边形的底是12厘米，底是高的3倍，这个平行四边形的面积是多少平方厘米．
<gadget id="calculator">12 / 3</gadget>
<output>4</output>

<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<result>48</result>