Area of four walls of a room is 99 m2. The length and breadth of the room are 7.5 m and 3.5m respectively. The height of the room is:	Choose the correct choice from the following choices:
A) 2.5 m
B) 3.5 m
C) 1.5 m
D) 4.5 m
E) 5.5 m

Rationale: 2 ( 7.5 + 3.5 ) × h = 99 2 ( 11 ) h = 99 22 h = 99 h = 99 / 22 = 9 / 2 = 4.5 m answer is d .
Answer: D