Answer:
smaller square: a^2 millimeters.
larger square: 4a^2 millimeters.
Explanation:
So all we need to know is the formula of a square:
---If we know a side length, the Area(square) is equal to the side x side or s^2
---So the smaller square has a side length of : "a"
a x a or a^2 =(a^2 mm^2)
---So the larger square has 2 times the side length of smaller square: 2 x a
2a x 2a = 4a^2 = (4a^2 mm^2)
Have a great day, and I hope this helps you ;D