A room is 8.5m long 6.5m broad and 3.4m high. It has two doors each measuring (1.5m by 1m) and two window each measuring (2m by 1m).find the cost of painting its fours walls at Rs 160 per m^2.
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total area of the four walls,
= 2(8.5×3.4) + 2(6.5×3.4)
= 57.8 + 44.2
=102 m^2
Area of two doors = 2(1.5×1) = 3 m^2
Area of two windows = 2(2×1) = 4m^2
so,
the area which has to be paint = (Total area of the wall) - (area of twk doors) - (area of two windows)
= 102 - 3 -4
=95 m^2
hence the total cost of painting
= 95m^2 × Rs 160 /m^2
= Rs 15200
_____________________
I hope this will help you...
= 2(8.5×3.4) + 2(6.5×3.4)
= 57.8 + 44.2
=102 m^2
Area of two doors = 2(1.5×1) = 3 m^2
Area of two windows = 2(2×1) = 4m^2
so,
the area which has to be paint = (Total area of the wall) - (area of twk doors) - (area of two windows)
= 102 - 3 -4
=95 m^2
hence the total cost of painting
= 95m^2 × Rs 160 /m^2
= Rs 15200
_____________________
I hope this will help you...
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