A triangle and a parallelogram have the same base and height, and the area of the triangle is 60 square meters, what is the area of the parallelogram in square meters?
一个三角形与一个平行四边形等底等高，三角形的面积是60平方米，那么平行四边形的面积是多少平方米．
<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<result>120</result>