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1. |
Area of a four wall of a room is 77 square meters . the length and breadth of room are 7.5 meters and 3.5 meters respectively . the height of the room is ? |
A. | 3.5 meters |
B. | 5.4 meters |
C. | 6.77 meters |
D. | 7.7 meters |
Answer» B. 5.4 meters | |