Use a square red paper with a side length of 40 cm to make a small red flag with a right-angled triangle with a base and a height of 10 cm. How many sides can you make at most?
用一块边长40厘米的正方形红纸，做底和高都是10厘米的直角三角形的小红旗，最多可以做多少面．
<gadget id="calculator">40 / 10</gadget>
<output>4</output>

<gadget id="calculator">4 * 4 * 2</gadget>
<output>32</output>

<result>32</result>