UPSKILL MATH PLUS

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A farmer wants to fence his circular poultry farm with barbed wire whose radius is 399\(m\). The cost of fencing is \(Rs\).15 per meter. He has \(Rs\).30000 with him. How much more amount will be needed to fence his farm? (Use \(π\ \)\(= \)\(22/7\))
 
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The excess amount required is \(Rs\).