Question

The length breadth and height of a room are 5m,4m,and 3m respectively .fine the cost of white wasking the walls

Answer 1

CSA of room =2(l+b)h
=2(5+4)3
=2(9)3
=54.

Answer 2

Heya !

Here's your answer !!

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Length of the room = 5 m

Breadth of the room = 4 m

Height of the room = 3 m

Cost of white washing the four walls = Curved Surface Area of the Room

=> C.S.A. = 2 ( l + b ) × h

=> 2 ( 5 + 4 ) × 3

=> 2 × 9 × 3

=> 18 × 3

=> 54 m^2

Therfore,

The cost of white washing the four walls is Rs. 54.



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Thanks !!