A) \[27\,\,{{\text{m}}^{\text{2}}}\]
B) \[54\,\,{{\text{m}}^{\text{2}}}\]
C) \[58\,\,{{\text{m}}^{\text{2}}}\]
D) \[64\,\,{{\text{m}}^{\text{2}}}\]
Correct Answer: B
Solution :
Let length and breadth of the room be I and b. Then, perimeter \[=2\times (1+b)=18\] \[\therefore \] \[l+b=9\] Area of four walls of the room \[\Rightarrow \] \[2\times (l+b)\times h=2\times (9)\times 3=54\,\,{{\text{m}}^{\text{2}}}\]You need to login to perform this action.
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