A courtyard 4.55 m long and 5.25 m broad is paved with square tiles of equal size. What is the largest size of tile used?A21 cmB28 cmC35 cmD25 cmAnswer: C. 35 cm Read Explanation: 1m = 100cm, 4.55 m = 455 cm, 5.25 m = 525 cm, Find HCF of 455 and 525, 455 =5 x 7 x 13, 525= $5 ^ 2 \times 3\times 7$ HCF=5 x 7=35 cm Read more in App