How many marbles of 10cm length and 7cm width are required to pave the floor of room 7m length and 4m breadth? A. 3200 B. 2800 C. 4000 D. 5100 Answer Workspace Report Discuss Answer with explanation Answer: Option C Explanation Area of floor = 700*400 = 280000 Area of marble = 10*7 = 70 N = 280000/70 = 4000 Workspace
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