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?
Pick one:	A) 814	B) 820	C) 840	D) 844	E) None of these
Explanation:   Length of largest tile = H.C.F. of 1517 cm and 902 cm = 41 cm.   814rea of each tile = (41 × 41) cm2   814nswer: 814
<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?