Triangles and parallelograms have equal bases and equal areas. The height of the triangle is 6 cm, what is the height of the parallelogram in cm?
三角形和平行四边形底相等，面积也相等．三角形的高是6厘米，平行四边形的高是多少厘米．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<result>3</result>