A square and a triangle have the same area. The perimeter of the known square is 40 cm. The base of the triangle is 25 cm, what is the height of the triangle.
一个正方形和一个三角形面积相等．已知正方形的周长是40厘米．三角形的底是25厘米，三角形的高是多少．
<gadget id="calculator">40 / 4</gadget>
<output>10</output>

<gadget id="calculator">2 / 25</gadget>
<output>2/25 = around 0.08</output>

<gadget id="calculator">10 * 10 * (2/25)</gadget>
<output>8</output>

<result>8</result>