A room is 7 m 20 cm long and 5 m 20 cm broad. If square tiles have to be laid in such a way that an exact number of tiles fit in and no tile has to be cut, then what is the greatest length of the side of square tiles?
A40 cm
B20 cm
C30 cm
D50 cm
A room is 7 m 20 cm long and 5 m 20 cm broad. If square tiles have to be laid in such a way that an exact number of tiles fit in and no tile has to be cut, then what is the greatest length of the side of square tiles?
A40 cm
B20 cm
C30 cm
D50 cm