The base of a parallelogram is 20cm and the height is 12cm. What is the area of the triangle with the same base and height in square centimeters?
一个平行四边形的底是20cm，高是12cm，与它等底等高的三角形的面积是多少平方厘米？
<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">20 * 6</gadget>
<output>120</output>

<result>120</result>