Correct option is C
Let the number of chairs in each row be x.
Since the number of rows is equal to the number of chairs in each row, the total number of chairs in the auditorium is:
Total chairs = x × x = x^2
The total capacity of the auditorium is given as 40,000, so:
x^2 = 40,000
To find x, take the square root of both sides:
x = √40,000
x = 200
Thus, the number of chairs in each row is 200.