C. 7 / 7
ExplanationStep 1: Standard form of circle is x² + y² = r². Step 2: r² = 49 so r = 7. Step 3: The right side is not radius but radius squared.
Step 1: Circle का standard form x² + y² = r² है। Step 2: r² = 49 इसलिए r = 7। Step 3: Right side radius नहीं बल्कि radius square होता है।
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