all walls of a room are rectangular. length of each wall is 3 m and its breadth is 2 m. find the cost of painting the wall at the rate 5 rupees per square metre.
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total wall of room =6
area of each wall=3×2=6m^2
area of 6 wall=36m^2
cost=36×5=₹180
area of each wall=3×2=6m^2
area of 6 wall=36m^2
cost=36×5=₹180
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all walls=4walls
length=3m
breadth=2m
solution:
area of one wall =l×b
area of four walls=4(l×b)
=4(3×2)
=4(6)
=24m^2
cost of painting=1m^2=Rs.5
then cost of paintaing=24m^2
=24×5
=120Rs.
length=3m
breadth=2m
solution:
area of one wall =l×b
area of four walls=4(l×b)
=4(3×2)
=4(6)
=24m^2
cost of painting=1m^2=Rs.5
then cost of paintaing=24m^2
=24×5
=120Rs.
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