Answer:
The length of smaller square is 5 inches.
Explanation:
As we know that,
Area of square = Side × Side
Let the length of smaller square be "a".
and, Let the length of larger square be "b".
Also it is given that,

⇒

⇒

⇒

⇒ a² = 100
⇒ a = 10
Hence, Length of smaller square is 10 inches.