Let the side of the square = a
Area = a x a = a²
Path Rihanna Walked = Diagonal of the Square
By Pythagoras Theorem,
Diagonal of Square , x² = a² + a²
x = √2a
Given area = a²= 11025 m²
a = √11025
a = 105 m
Therefore length Rihanna Walked = √2a = √2 x 105
= 148.49 m