Answer:
The dimensions were changed by 5.
Step-by-step explanation:
Let the area of original circle be [tex]x^{2}[/tex]
So area of enlarged circle is [tex]25x^{2}[/tex]
The ratio of area for the original and enlarged circle is 1:25
The ratio of area is the sqauare of the scale factor.
So the scale factor is 1:5
The dimensions were changed by 5 .
