The dimension of a room are 12.5 m by 9 m by 7 m. there are 2 doors and 3 window in the room. each door measures 2.4 m by 1.5 m and each window 1.4 m by 1.2 m. Find the cost of painting the walls at the ₹ 3.50 per square metre
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Answered by
147
here's ur answer...
length of the room=12.5m
breadth=9m
height=7m
we have to find it's CSA because we have to find the cost of painting walls.
CSA=2h(l+b)
=2×7(12.5+9)
=14×21.5
=301m²
area of both doors=2(l×b)
=2(2.4×1.5)
=2×3.6
=7.2m²
area of three doors=3(l×b)
=3(1.4×1.2)
=3×1.68
=5.04m²
area of wall without any doors and windows=
301-(7.2+5.04)
=301-12.24
=288.76m²
total cost=288.76×3.5
=₹1010.66
hope this helps....
length of the room=12.5m
breadth=9m
height=7m
we have to find it's CSA because we have to find the cost of painting walls.
CSA=2h(l+b)
=2×7(12.5+9)
=14×21.5
=301m²
area of both doors=2(l×b)
=2(2.4×1.5)
=2×3.6
=7.2m²
area of three doors=3(l×b)
=3(1.4×1.2)
=3×1.68
=5.04m²
area of wall without any doors and windows=
301-(7.2+5.04)
=301-12.24
=288.76m²
total cost=288.76×3.5
=₹1010.66
hope this helps....
ekumar749:
10x
wlcm
Answered by
20
Answer:
its 1011.50..............
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