This second room has two doors 1.8 m wide and 2.5 m high and two windows 1.5 m wide and 1.3 m high. Let's calculate how much it will cost to plaster four walls excluding doors and windows at Rs 75 per square meter.
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Answer:
area of doors=l×b
=2.5×1.5(m square)
=3.75m square
area of 2 doors=2×(3.75m square)
=7.5m square
area of window=l×b
=1.5×1.8(m square)
=2.75m square
area of 2window=2(2.75m square)
=5.5m square
The cost of plastering 1m square =Rs.75
Total area of windows and door =(7.5+5.5)m square
=13m square
The cost of plastering 13m square =(13×75 )m square
=Rs.975 answer
i hope this is useful
and this question is to good
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