The perimeter of the floor of a drawing room is 66m. If the height of the room is 5.2 metre , what is the area of the four walls of this room.
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Answer:
P= 2(l+b)
66= 2(l+5.2)
l+5.2= 66/2
= 33
l= 33-5.2
= 27.8
A= l×b
= 5.2×27.8
= 144.56 sq.m
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