Dad has a rectangle with a length of 37 cm and a width of 23 cm surrounded by iron wires. Now he wants to surround it into a square. What is the side length of the square in cm?
爸爸有一个铁丝围成的长37厘米、宽23厘米的长方形，现在要把它围成一个正方形，正方形的边长是多少厘米？
<gadget id="calculator">37 + 23</gadget>
<output>60</output>

<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">60 * (1/2)</gadget>
<output>30</output>

<result>30</result>