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

### Instruction:
 简正在看一棵树。同时，树和简都投下了阴影 - 树的阴影长10米，简的阴影长0.5米。简的身高是1.5米。树有多高？


### Response:
 简的阴影是她身高的1.5 / 0.5 = <<1.5/0.5=3>>3倍小。
树的高度因此是阴影的3倍，所以它的高度是3 * 10 = <<3*10=30>>30米。