Question 6403 – Nielit Scientific Assistance CS 15-10-2017

Line AB is 24 metres in length and tangent to the inner one of the two concentric circles at point C, Points A and B lie on the circumference of the outer circle. It is known that the radii of the two circles are integers. The radius of the outer circle is

Correct Answer: A

Given data,
AB=24cm
CB=12cm
θC=5cm(Assume)
θB=5​ ²​ +12​ ²​ =169
θB=13cm
Note: They forgot to mention the value 5. If we are considering value=5 then answer should be A.