A room is 8m long, 7m wide and 4m high. It has a door 3×2 m and two windows 2 × 1.5 .Find the cost of painting of its walls at the rate of rs.15 per sq. m.
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the volume of the room=8m×7m×4m=224m
the area of the door=3×2m=6m
the area of a window=2×1.5=3m
the area of two windows=3×2=6m
the total area of door and windows=6+6=12m
the volume of the walls=224m-12m=212m
cost of painting the walls=Rs. 15per sq.m
=212m×rs. 15
=Rs. 3180
the area of the door=3×2m=6m
the area of a window=2×1.5=3m
the area of two windows=3×2=6m
the total area of door and windows=6+6=12m
the volume of the walls=224m-12m=212m
cost of painting the walls=Rs. 15per sq.m
=212m×rs. 15
=Rs. 3180
praween2:
you are wrong
but how?
here we do not have to find out volume
yes we have to find cost of painting and the ans is rs 1520
oh sorry ... ! i done it by mistake... i am just a learner ... i learned a lot with my mistake.
thanks
its ok
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2
Answer:
3880 ans....................
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