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Class 10 › Mathematics › Coordinate Geometry
CBSE2026Class Class 10 · Mathematics1 Marks · Mcq✅ Verified
A circle centred at $(-1, 2)$ passes through the point $(0, 3)$. Radius of the circle is
A. $2\sqrt{2}$
B. $\sqrt{2}$
C. $\sqrt{26}$
D. $1$
✅ Answer & Solution
✅ Correct Answer: B
Step 1: Radius $=$ distance between centre $(-1,2)$ and the point $(0,3)$ on the circle.
Step 2: $$r=\sqrt{(0-(-1))^2+(3-2)^2}$$
Step 3: $=\sqrt{1^2+1^2}=\sqrt{2}$.
Answer: (B) $\sqrt{2}$
