MathematicsEuclidean geometryJAMB
Two chords AB and CD of a circle intersect at X inside the circle. AX = 4 cm, XB = 6 cm and CX = 3 cm. Find XD.
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Answer: A. 8 cm
Intersecting chords: AX × XB = CX × XD, so 24 = 3 × XD and XD = 8 cm.
An AdmitMe practice question, written for the JAMB syllabus. Not an official past question.