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What is the least number of squares tiles required to pave the floor of a room 15 m 17 cm long and 9 m 2 cm broad?

814
820
840
844

Correct Answer: 814

Explanation:

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

Area of each tile = (41 x 41) cm².

∴ Required number of tiles =	❨	1517 x 902	❩	= 814.
		41 x 41

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