The area of a triangle is 12m**2, what is the area of a parallelogram with the same base and height in m**2?
一个三角形面积是12m**2，与它等底等高的平行四边形的面积是多少m**2．
<gadget id="calculator">12 * 2</gadget>
<output>24</output>

<result>24</result>