how many tiles, each of lenght 8cm and breadth 5cm ,are needed to tile the dining space 400cm long and 200cm wide?
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First, we have to calculate the total area of the dining space, i.e. 400*200= 80000 square cms. The dimensions of one tile are given as 5cm and 8cm. Hence area of 1 tile= 5*8=40 sq. cms
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