find the expenditure of putting a barbed wire around 4 hectare square field if it cost rupees 45 per metre
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Let the length of each side of the square field = s metresArea of square field = 90000 m2⇒s2 = 90000⇒s = 90000−−−−−√⇒s = 2×2×2×2×3×3×5×5×5×5−−−−−−−−−−−−−−−−−−−−−−−−−−−√⇒s = 2 × 2 × 3 × 5 × 5⇒s = 300 mNow,perimeter of the square field = 4 s = 4 × 300 = 1200 mCost of fencing 1 m of the field = Rs 35So, cost of fencing 1200 m of the field = Rs (1200 × 35) = Rs 42000
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