If the height of a triangle is 15 cm and the area of a square is 15 cm, what is the base of the triangle?
一个三角形的高是15厘米，与一个边长是15厘米的正方形的面积相等，这个三角形的底是多少厘米．
<gadget id="calculator">2 / 15</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">15 * 15 * (2/15)</gadget>
<output>30</output>

<result>30</result>