Mathematics · Geometry
A circle having centre C1 and radius r1 = 5 cm is placed touching both arms of a right angle. Another smaller circle having centre C2 and radius r2 is placed touching both arms of the right angle and also externally touching the bigger circle. Find the radius r2 (in cm) of the smaller circle.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15(3 - 2√2)✓
- 23(5 + 2√2)
- 33(5 - 2√2)
- 45(3 + 2√2)
Correct answer
5(3 - 2√2)
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