Answer:
The direct distance between the birds is 12.64 miles.
Explanation:
We have, one bird flew 12 miles west and another bird flew 4 miles north. It is required to find the direct distance between the birds. It means we need to find the resultant of two displacement. It can be given by :
![d=√(12^2+4^2) \\\\d=12.64\ \text{miles}](https://img.qammunity.org/2021/formulas/mathematics/high-school/mujyq8p1qusf8eibqmwdtta2zwfhwuwy6i.png)
So, the direct distance between the birds is 12.64 miles.