Question

the walls and ceiling of a room are to be plastered the Length breadth and height of a room are 4.5 M m,3m and 350 CM respectively find the cost of plastering at the rate of Rs 8 per metre square

Answer 1

Area to be plastered  = [2(l + b) x h] + (l x b)

                                       = [2(4.5 + 3) x 3.5] + (4.5 x 3)

                                       = 52.5 + 13.5

                                       = 66

Cost of plastering          = 66 x 8 = 528