Mathematics · Coordinate Geometry
The radius of the circle which externally touches the four circles given by (x ± 1)2 + (y ± 1)2 = 1 is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1None of these
- 22√2 unit
- 3√2 unit
- 4(√2 - 1) unit✓
Correct answer
(√2 - 1) unit
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