Question

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

please answer fast please​

Answer 1

Answer:

ANS :- Rs 555

Step-by-step explanation:

Length l = 5m

Breadth b = 4m

Height h = 3m

Surface area of the four walls and the ceiling of the room = 2h( l + b ) + l X b

= 2 X 3 ( 5 + 4 ) + 5 X 4

= 6 X 9 + 20

= 54 + 20

= 74 m²

Cost of white washing = 74 X 7.50

= Rs 555

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