the length ,height and breadth of a hall are 5m,6m and 7m respectively.the hall has one door of area 1m×0.5m.find the cost of the painting the walls at the rate of rupees90 per square metre.
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Area of four walls =2(l+b) *h
Area of four walls =2(5+7)*6
Area of four falls =24*6
Area of four walls =144m²
Area of doar =1*0.5=0.5m²
Area of walls for painting =144-0.5
Area of wall for inting =143.5
Cost of painting walls at ₹90 =90*143.5
Cost for painting =₹12915
Please mark as brainlist if it is correct
Area of four walls =2(5+7)*6
Area of four falls =24*6
Area of four walls =144m²
Area of doar =1*0.5=0.5m²
Area of walls for painting =144-0.5
Area of wall for inting =143.5
Cost of painting walls at ₹90 =90*143.5
Cost for painting =₹12915
Please mark as brainlist if it is correct
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