NECO Mathematics 2007 Objective — Question 46
Question 46 of 60 from the National Examinations Council (NECO) Mathematics 2007 Objective paper, with the correct answer and a full explanation.
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In a circle of radius 10cm, find the distance of a chord of length 16cm from the centre of the circle.
- A. 2cm
- B. 3cm
- C. 6cmCorrect
Explanation
By Pythagoras: 10^2 = h^2+8^2 (half the chord is 8cm), so h^2=36, h=6cm.
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