Q. 54.8( 10 Votes )

A room is 6 m long, 4 m broad and 3 m high. Find the cost of laying tiles on its floor and four walls at the cost of Rs. 80/m2.

Answer :

Given, a room with length, breadth, and height as 6 m, 4 m, and 3 m respectively and the cost of


laying tiles on its floor and four walls per m2 is Rs. 80.


We know, Area of four walls = 2×(l+b)×h


Area of four walls = 2×(l+b)×h


= 2×(6+4)×3


= 2×10×3


= 60 m2


Area of floor = length × breadth


= 6 × 4


= 24 m2


Cost of laying tiles on its floor and four walls at the rate of Rs. 80/m2= 80×(60+24)


= Rs. 80×84


= Rs. 6720


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