A) \[21\,\,{{\text{m}}^{2}}\]
B) \[42\,\,{{\text{m}}^{2}}\]
C) \[54\,\,{{\text{m}}^{2}}\]
D) \[108\,\,{{\text{m}}^{2}}\]
Correct Answer: C
Solution :
Area of four walls of a room = 2 (Length + Breadth) \[\times \]Height = Perimeter of floor \[\times \]Height \[=18\times 3=54\,\,{{\text{m}}^{2}}\]You need to login to perform this action.
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