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A classroom is 11 m long, 8 m wide and 5 m high. Find the sum of the areas of its floor and the four walls (including doors, windows etc.)
Dimensions of class room = 11m × 8 m ×5 m
Length = 11m , Breadth = 8m , Height = 5 m
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