Question

find the cost of painting the walls and ceiling of room 6 metre long 5 metre broad and 3.5 M High at 6.75 per square metre

Answer 1

Area of four walls = 2(l+b)*h
                             = 2(6+5)*3.5
                             = 77 m²
Area of Ceiling = l*b = 30 m²

Total area to be painted = 77 + 30 = 107 m²

So, Cost = 107*6.75 =  Rs. 722.25

Answer 2

this is the ans.... plz mark as brainliest