Question

Tina's room is 12m long, 8m wide and 3m high. The ceiling and the side walls are painted at the rate of Rs. 20 per m^2

what is the amount spent by her

Answer 1

Answer:

Rs 4320

Step-by-step explanation:

Find the area of the ceiling:

Area of the ceiling = Length x Breadth

Area of the ceiling = 12 x 8 = 96 m²

Find the area of the 4 walls:

Area of the 4 walls = Perimeter x height

Area of the 4 walls = (12 + 8 + 12 + 8) x 3

Area of the 4 walls = 120 m²

Find the total area:

Total area = 96 + 120 = 216 m²

Find the cost:

1 m² = Rs 20

216 m² = 216 x 20 = Rs 4320