A room is 40 m long,30 m board 10m high.find the cost of whitewashing it's four wall and ceiling at Rs20 per
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given,
length = 40
breadth = 30
height = 10
four walls of the room = [2(l+b)h]
=> [ 2× 70 × 10 ]
=> [140×10]
=> 1400 square metre.
cost of white washing the room = 1400×20
=> 28000
hence the required cost is 28000 Rs
length = 40
breadth = 30
height = 10
four walls of the room = [2(l+b)h]
=> [ 2× 70 × 10 ]
=> [140×10]
=> 1400 square metre.
cost of white washing the room = 1400×20
=> 28000
hence the required cost is 28000 Rs
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