Two vertical ladders length of 6 m and 11 m are kept vertically at a distance of 12 m. Find the top distance of both ladders?
Choose one
A) 22	B) 27	C) 13	D) 19	E) 17

Rationale: so distance between the top points = ad = 122 + 52 − − − − − − − √ = 13122 + 52 = 13 so in paper b he did well . answer : c
Answer: C