A parallelogram and a triangle have the same area and the same base. It is known that the height of the parallelogram is 4 cm. What is the height of the triangle in cm?
一个平行四边形和一个三角形的面积相等，底也相等，已知平行四边形的高是4厘米，三角形的高是多少厘米．
<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<result>8</result>