The length and width of a Hall are 5 m,6m,7m respectively. The hall has one door of area 1m×0.5m .find the cost of painting the walls at the rate of RS.90 per square meter
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L=5m
b=6m
h=7m
area of the hall = l×b×h
= 5×6×7
=210m^3
then, area of the door=l×b
=1 × 0.5
= 0.5m^2
so,area of the wall=210-0.5
= 105m^2
cost of painting= 105 ×90
=₹9450
b=6m
h=7m
area of the hall = l×b×h
= 5×6×7
=210m^3
then, area of the door=l×b
=1 × 0.5
= 0.5m^2
so,area of the wall=210-0.5
= 105m^2
cost of painting= 105 ×90
=₹9450
priyu6:
its wrong
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