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MATHEMATICS

JAMB 2022 - Question 37

Mathematics 2022 JAMB Past Questions - Question 37: Find the length of a chord 3cm from the centre of a circle of radius 5cm

Find the length of a chord 3cm from the centre of a circle of radius 5cm

A: 8cm

B: 5.6cm

C: 7cm

D: 6.5cm

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Correct Answer

Explanation

Using pythagoras formula:Hyp2 = adj2 + opp25^2 = opp2 + 3^25^2 - 3^2 = adj24 = adjlength of the chord = 2 * 4 = 8cm