Given: The total area of four walls = 600
m2 The length of wall =
times of width
The height of room = 10 m
Formulae required: The area of four walls = perimeter of floor × height
The perimeter of floor = 2 × (length + width)
Area of floor = length × width
Calculations: Let the width of a wall be 'x'
The length of a wall =
Area of four walls = 2 × (length + width) × height
⇒ 600 = 2 × (length + width) × height
⇒ 300 = (x +
) × 10
⇒ 30 =
⇒ x = 12 m
Hence, the width of floor = 12 m
The length of floor = 3 ×
⇒ 18 m
The Area of floor = 12 × 18
⇒ 216
m2 ∴ The area of floor is 216
m2