Question

the length ,breath and height of a room are 4.5 m , 3 m and 350 cm respectively find the expenditure of plastering the walls and the ceiling of the room at the rate of rupees 8 per m square​

Answer 1

Answer:

The expenditure of plastering the walls and the ceiling is Rs 528

Step-by-step explanation:

here length of the room is 4.5 m

breadth of the room is 3 m

height of the room is 350 cm=3.5 m

area of the ceiling is length× breadth

=4.5m×3m=13.5 sq m

area of the 4 walls is 2(length+breadth).height

=2(4.5+3).3.5 sq m=2×7.5×3.5sq m

=15×3.5sq m

=52.5 sq m

total area fir plastering is

(13.5+52.5) sq m=66 sq m

at the rate of Rs 8 per sq m the expenditure is

66×8Rs= 528 Rs