A rope is 1 meter long. Fold in half twice and cut in the middle with scissors. What is the length of the longest segment obtained in centimeters?
一根绳子长1米．对折两次，用剪刀在中间剪断．得到的最长一段长多少厘米．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 * (1/2) * (1/2) * 100</gadget>
<output>25</output>

<result>25</result>