a door of length is 4m and breadth is 3m is fitted in the wall the length of the wall is 15.4m and breadth is 13.6m ,find the area of the wall , also find the cost of whitewashing the wall at the rate of₹20per m
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Given
Length of door=4m
Breath of door=3m
Area of door =lxb
=4x3=12m²
Length of wall=15.4m
Breath of wall=13.6m
Area of wall with door area =LxB
=15.4x13.6
=209.44m²
Area of wall = area of wall with door area - area of door
=209.44-12=197.44m²
Cost of 1m² whitewash =₹20
Then cost of 197.44m² whitewash =197.44x20=₹3948.8
This is ur ans hope it will help you
Length of door=4m
Breath of door=3m
Area of door =lxb
=4x3=12m²
Length of wall=15.4m
Breath of wall=13.6m
Area of wall with door area =LxB
=15.4x13.6
=209.44m²
Area of wall = area of wall with door area - area of door
=209.44-12=197.44m²
Cost of 1m² whitewash =₹20
Then cost of 197.44m² whitewash =197.44x20=₹3948.8
This is ur ans hope it will help you
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