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Answer:
Length of fancying need = 36 m
Step-by-step explanation:
Given:
Area of square field = 81 m²
Find:
Length of fancying need
Computation:
Area of square field = 81 m²
Side² = 81
Side = 9 m
Length of fancying need = 4 x side
Length of fancying need = 4 x 9
Length of fancying need = 36 m