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एक आयताकार टुकडे की लम्बाई 20 मीटर व चौडाई 15 मीटर है। इसके चारों कोनों से 3.5 मीटर त्रिज्या के चार चतुर्थांश काटे गये हैं। शेष भाग का क्षेत्रफल ज्ञात कीजिए।

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आयताकार टुकडे की लम्बाई l = 20 मीटर

आयताकार टुकडे की चौड़ाई b = 15 मीटर

चतुर्थांश की त्रिज्या r = 3.5 मीटर

तब शेष भाग का क्षेत्रफल = आयताकार टुकडे का क्षेत्रफल – चारों

चतुर्थांशों का क्षेत्रफल

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