Question

Please answer with process

Answer 1

Answer:

sides of triangular design = 9cm , 28cm , 35cm

area of each triangular tile = 88.2sq.cm      (after applying herons formula)

total area of 8 tiles = 8 x 88.2

                               =  705.6sq.cm

cost of polishing per sq.cm = 150p

cost of polishing per 705.6 sq.cm = 150 x 705.6

                                                        = 1,05,840p

                                                        = Rs.1,058.4