Question

the length and breadth and height of a room are 5m,4m and 3m respectively. find the cost of white washing the walls of the room and the ceiling at the rate of rs.7.50 per m2

Answer 1

length =5m ,breadhth =4m,height = 3m
CSA + area of base
2(l+b)h +l*b
2(5+4)*3 +5*4
54 +20
74m^2
cost of white washing=rs7.50
74 *7.50 =rs.555 answer.

Answer 2

Answer:

it will help

Step-by-step explanation:

length =5m ,breadhth =4m,height = 3m

CSA + area of base

2(l+b)h +l*b

2(5+4)*3 +5*4

54 +20

74m^2

cost of white washing=rs7.50

74 *7.50 =rs.555 answer.

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