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What is the least number of squares tiles required to pave the floor of a room 15.17 m long and 9.02 m broad?

Correct Answer: 814

Explanation:

Length of largest tile = H.C.F. of 1517 cm and 902 cm = 41 cm. 


Area of each tile =  41 × 41 c m 2   


Required number of tiles  =  1517 × 902 41 × 41 = 814


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