Q. 144.5( 11 Votes )

# The walls and ceiling of a room are to be plastered. The length, breadth nad height of the room are 4.5 m, 3 m and 350 cm, respectively. Find the cost of plastering at the rate of Rs. 8 per square metre.

Answer :

Given,

Length of room = 4.5 m

Breadth of wall = 3 m

Height of wall = 350 cm =

So,

Area of ceiling + area of walls =

=

=

Cost of plastering 1 m^{2} area = Rs.8

∴ Cost of plastering 66 m^{2} area = 66 ×8 =Rs.528

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