Mathematics · Mensuration
एक वृत्ताकार पार्क की परिधि 440 मीटर है। पार्क की परिधि के अंदर एक 7 मीटर चौड़ा बॉर्डर बना हुआ है। बॉर्डर का क्षेत्रफल कितना है?
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