The bases and areas of the triangles and parallelograms are equal. Given that the height of the parallelogram is 4 cm, what is the height of the triangle in cm?
三角形与平行四边形的底和面积都相等．已知平行四边形的高是4厘米，三角形的高应是多少厘米
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>