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Perimeter = 2Length + 2Breadth
Length = Perimeter/2 - Breadth
Length = (49/2 cm) - 9.5 cm
Length = 15 cm
Area = Length × Breadth
= 15 cm × 9.5 cm
= 142.5 cm²
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4.
Area = Length × Breadth
Length = Area / Breadth
Length = (480 cm²) / (30 cm)
Length = 16 cm
Perimeter = 2Length + 2Breadth
= (2 × 16 cm) + (2 × 30 cm)
= 92 cm