Question

Point ' $O$ ' is the centre of the ellipse with major axis $AB$ and minor axis $CD$. Point $F$ is one focus of the ellipse. If $OF=6$ and the diameter of the inscribed circle of triangle $OCF$ is 2 , then the product $(AB)(CD)$ is equal to -

• A. 65
• B. 52
• C. 78
• D. none

Answer 1

Answer: (A)

Correct answer is (a) 65