If a square frame with a side length of 4 cm is changed into a triangle with equal area and a base of 5 cm, what is the height of the triangle?
把一个边长是4厘米的正方形框架改围成一个面积相等且底是5厘米的三角形，三角形的高是多少？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">4 * 4 * (2/5)</gadget>
<output>32/5 = around 6.4</output>

<result>32/5 = around 6.4</result>