Area of a square field = 6084m²
Area = side × side
6084= (side)²
=> Side = √6084
=> Side =78 m
Then,
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Perimeter = 4 × side
= (4 ×78) m
=312m
Therefore,
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Rate of fencing = Rs 40/ m
Cost of fencing the field = Rs ( 40 × 312) = Rs 12480
Rate of ploughing = Rs 20/ m^2
Cost of ploughing the field = Rs 20*6084=121680
Total cost = 12480+121680=Rs 134160
HOPE IT HELPS