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?  Choose the correct choice from the following answers:
A) 814 tiles	B) 800	C) 100	D) 200	E) 456
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)/41 x 41 = 814.   814 tilesnswer:814 tiles
<result>A</result>
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?