उस वृत्त की त्रिज्या ज्ञात कीजिए जिसका केंद्र (2, 2) पर है और जो बिंदु (4, 5) से होकर गुजरता है।

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Airforce Group X 6 November 2020 Memory Based Paper
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Option 2 :
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 संकल्पना:

माना कि A (x1, y1) और B (x2, y2), XY - तल में दो बिंदु हैंं, तो A और B के बीच की दूरी को निम्न द्वारा ज्ञात किया गया है:

गणना:

वृत्त का केंद्र (2, 2) पर है। चूँकि बिंदु (4, 5) वृत्त पर है, तो इस बिंदु से केंद्र की दूरी वृत्त की त्रिज्या r है।

अतः हमें निम्न प्राप्त होता है 

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