Answer:
3 cm
Step-by-step explanation:
4(x + 3) = 24
4x + 12 = 24
4x = 12
x = 3 cm
**multiply by 4 because a square has 4 equal sides***
Answer:
3
Step-by-step explanation:
A square has 4 equal sides
so
4(x+3) = perimeter = 24
4x+12 = 24
4x = 12
x=3