Question

The walls and ceiling of a room are to be plastered. The length, breadth and height of the room are

4.5m, 3m and 3.5m respectively. Find the cost of plastering at the rate of Rs.8 per sq.m.?​

Answer 1

Answer:

#hope it helps u

Step-by-step explanation:

Given, length of the room (l) = 4.5 m

Breadth of the room (b) = 3m

Height of the room (h) = 350 cm = 3.5 m

And the cost of plastering = Rs. 8perm²

Therefore, the area of the walls = 2h(l+b)

= 2×3.5×(4.5+3) = 7×(7.5) = 52.2 m²

Area of the ceiling = lb = 4.5×3 = 13.5m²

Area of the room = 52.5+13.5 = 66m²

Hence, the cost of plastering = 66×8 = Rs 528