The area of a triangle is 12.5 square meters. Two such triangles can be used to form a parallelogram with a base of 10 meters. What is the height of this parallelogram in meters?
一个三角形的面积是12.5平方米，用两个这样的三角形可以拼成一个底是10米的平行四边形，这个平行四边形的高是多少米？
<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">12.5 * (1/5)</gadget>
<output>2.5</output>

<result>2.5</result>