Question

1.The perimeter of a square in 20 cm. Find it's area.
2. The perimeter of square field in 8km .Find it's area in hectors​

Answer 1

The perimeter of a square in 20 cm. Find it's area

• Perimeter = 4a
• 20 = 4a
• a = 5
• Area = a²
• = 25 cm²

The perimeter of square field in 8km .Find it's area in hectors

• Perimeter = 4a
• 8 = 4a
• a = 2
• Area = a²
• = 4 km²

1 square kilometre = 100 hectares

• = 400 hectares