if length of a room is three times of its breadth and its area is 12 sq.m.what is perimeter of room?
Select the correct option
A) 14 m B) 18 m C) 24 m D) 16 m E) none of the above

Rationale: let breadth = x m . and length = 3 x m . x * 3 x = 12 , x ^ 2 = 4 , x = 2 . length = 6 m , breadth = 2 m . perimeter = 2 * ( 6 + 2 ) = 16 m answer d
Answer: D