Question

the length breadth and height of a room are 5cm,4cm and 3m respectively find tge cost of white washing the walls of the room and ceiling at rate of Rs.7.50 per m²​

Answer 1

Dimensions of the walls = 4×3 (m) , 5×3 (m) , 4×3 (m) , 5×3 (m)

Dimensions of the ceiling = 4×3 (m)

Total area = (4.3) + (5.3) + (4.3) + (5.3) + (4.3)

→ Total area = 36 + 30

→ Total area = 66 m²

Rate of white washing = 7.5 × 66 = ₹ 495