Question

Number of tiles 20 cm by 10 cm will be needed to cover the floor of a room 25 m long and 16 m wide are :
(A)41 (B)45
(C)44 (D)40

Answer 1

number of tiles =20cmx 10cm 200cm sq and to cover the floor of a room =2(25m+16m) 2(41m) 82m 82m-2m =80m