数学题:用一根铁丝刚好焊成一个棱长10厘米的正方体框架，如果用这根铁丝焊成一个长12厘米，宽8厘米的长方体框架，他高应该是多少厘米？

数学题解答：这道题要用到长方体和正方体的棱长总和的知识。

长方体的棱长总和＝（长+宽+高）×4

正方体的棱长总和＝棱长×12

先用正方体的棱长算出它的棱长总和，也就是铁丝的长度：10×12=120（厘米）

再用铁丝的长度来计算长方体的高：120÷4 – 12 – 8 = 10（厘米）

推荐阅读：
The Dynamic Programming Algorithm to Compute the Minimum Falling　 Javascript’s toFixed Implementation without Rounding　 Algorithm to Count the Minimum Add to Make Parentheses Valid　 WXT pre-sale is now live – is it worth it?　 How to Serialize and Deserialize Binary Tree?　 How to Construct Binary Tree from String (Binary Tree Deserializ　 Activist’s Mother Faces Prison After One-Word Facebook Reply　 Ed-Tech Start-Ups Can Allow Anyone To Become A Teacher　 Russian Hacker Sold Millions Of Passwords For Less Than A $1, Sh　 How To Successfully Fine-tune Your Overall Social Media Strategy