A chord drawn 5 cm away from the center of a circle of radius 13 cm. Calculate the length of the chord?
A
7cm
B
9cm
C
12cm
D
24cm
Verified Correct Answer: D.
Step-by-Step Mathematical Solution
x\(^2\) + 5\(^2\) = 13\(^2\)
x\(^2\) + 25 = 169
x\(^2\) = 144
x = \sqrt 144
= 12
Length of the chord AB = 2x
2\(\times\)12= 24cm
Source: WAEC / JAMB / NECO Classroom Archive (Record #9330)