A table cover 4m x 2m is spread on a table find the cost of polishing the top of the of the table at Rs. 40 per sq. m if 25 cm table cover is hanging all round the table

Area of table cover = 4 m x 2 m = 8 sq m

Area of table cloth hanging down = 25 cm = 25/10000 sq m = 0.0025 sq m

Therefore, Area of table = (8 - 0.0025) sq m = 7.9975 sq m

 

Cost of polishing 1 sq m = Rs 40

Cost of polishing 7.9975 sq m = Rs 40 x 7.9975 = Rs 319.90