Question

find the cost of people in the walls of a room 5m long, 4 M wide and 3 M height allowing 7 metre square for doors Windows etc..if paper 4 m by 50cm cost rupees 3.25 per piece assuming that a whole number of Pieces must be bought ​

Answer 1

Answer:

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Answer 2

Answer:

Area of wall = 2h ( l + b )

= 2 × 3 (5+4)

= 54msq

Area of ceiling = l × b

= 20msq

Area of 4 wall + area of ceiling =

( 54 + 20 ) msq

= 74msq

Total cost = rate × area

= ( 30 × 74 )

= 222 Rs