1. **Problem statement:** There are 1225 students arranged in rows such that the number of rows equals the number of students in each row. We need to find how many students are in each row. 2. **Understanding the problem:** If the number of rows is $n$ and the number of students in each row is also $n$, then the total number of students is $n \times n = n^2$. 3. **Formula used:** Total students = $n^2$ 4. **Given:** Total students = 1225 5. **Set up the equation:** $$n^2 = 1225$$ 6. **Solve for $n$:** Take the square root of both sides: $$n = \sqrt{1225}$$ 7. **Calculate the square root:** Since $35 \times 35 = 1225$, we have: $$n = 35$$ 8. **Answer:** There are **35 students** in each row. This means the students are arranged in a perfect square formation of 35 rows and 35 students per row.