Question
Mathematics Question on Coordinate Geometry
The radius of a circle touching all the four circles (x ± λ)2 + (y ± λ)2 = λ2 is
A
2√2λ
B
(√2 - 1)λ
C
(2 + √2)λ
D
(2- √2)λ
Answer
(√2 - 1)λ
Explanation
Solution
The correct option is: (B) (√2 - 1)λ