MathematicsLociJAMB
A circle of radius r rolls round the outside of a fixed circle of radius R. The locus of the centre of the rolling circle is
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Answer: D. a circle of radius R + r with the same centre as the fixed circle
The moving centre always stays R + r from the fixed centre.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.