Answer:
The area of the square is 20.25 cm²
Step-by-step explanation:
∵ The perimeter of the square is 18 cm
∵ The perimeter of the square = side × 4
→ That means equate 18 by side × 4
∴ side × 4 = 18
→ Divide both sides
∴ Side = 18/4
∴ Side = 4.5 cm
∴ The side of the square is 4.5 cm
∵ Area of the square = side × side
∵ The side of the square = 4.5 cm
∴ Area of the square = 4.5 × 4.5
∴ Area of the square = 20.25 cm²
∴ The area of the square is 20.25 cm²
