Below is an instruction that describes a task. Write a response that appropriately completes the request in Chinese. Please answer in Chinese.

### Instruction:
 一根杆子长20米。它被切割后变短了30%。这根杆子有多长？


### Response:
 被切割掉的部分长度是30/100 * 20 = <<30/100*20=6>>6米。
这意味着杆子剩下的长度是20 - 6 = <<20-6=14>>14米。