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The area of the 4 walls of a room is 77 ...

The area of the 4 walls of a room is `77 m^(2)`. The length and breadth of the room are 7.5 m and 3.5 m respectively. Find the height of the room.

A

3.5 metres

B

5.4 metres

C

6.77 metres

D

7.7 metres

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The correct Answer is:
A
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