If the area of a triangle is 120 square meters, what is the area of a parallelogram with the same base and height?
一个三角形的面积是120平方米，和它等底等高的平行四边形的面积是多少平方米．
<gadget id="calculator">120 * 2</gadget>
<output>240</output>

<result>240</result>