The floor of a cuboidal hall has perimeter equal to 250 m and height 6 m. Find the cost of painting the hall at the rate of Rs 8 per m²

Find the area of the 4 walls:

Area of the 4 walls = Perimeter of the floor x height

Area of the 4 walls = 250 x 6 = 1500 m²

Find the cost of the painting:

1 m² = Rs 8

1500 m² = 1500 x 8 = Rs 12,000

Answer: The cost of painting the 4 walls is Rs 12,000