Answer :

Given,


Dimensions of class room = 11m × 8 m ×5 m


Where,


Length = 11m , Breadth = 8m , Height = 5 m


Ten,


Area of floor =


Area of four walls ( including doors & windows) =


=


Sum of areas of floor and four walls = area of floor + area of four walls


= 88 + 190 = 278 m2


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