Answer:
66
Step-by-step explanation:
Given that:
Total Number of books = 4356
Number of books in a row = number of rows
Let number of rows = b
Then number of books in each row = b
Total number of books = (number of rows * number of books per row
Hence,
4356 = b * b
4356 = b²
Take the square root of both sides
Sqrt(4356) = b
66 = b
Number of books in each row = 66
