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WAEC - Mathematics (2007 - No. 15)

A chord of length 6cm is drawn in a circle of radius 5cm. Find the distance of the chord from the center of the circle
2.5cm
3.0cm
3.5cm
4.0cm

Explication

\(5^{2}=3^{2}+x^{2}\\
25-9=x^{2}\\
16=x^{2}\Rightarrow x=4.0\)

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