Mathematics · Coordinate Geometry
Find the centre and radius of the circle x2 + y2 - 4x - 8y - 45 = 0.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Centre (2, 4) and radius √65✓
- 2Centre (4, 8) and radius √45
- 3Centre (4, 8) and radius 65
- 4Centre (2, 4) and radius 5
Correct answer
Centre (2, 4) and radius √65
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