Mathematics

A chord drawn 5 cm away from the center of a circle of radius 13…

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
Correct Answer: Option D
Explanation

x2 + 52 = 132
x2 + 25 = 169
x2 = 144
x = √ 144 

= 12
Length of the chord AB = 2x
2*12= 24cm