HCF of 3.75m and 5.25m is This question has not been answered yet! Don't worry! You can check out similar questions with solutions below ... and(a+b) is c.Prove that the HCF of a and b will be c/2 or ... hcf of 1.6 and .72 HCF of 72 112 and 324HCF of 60, 84 and 108find the ratio of 3.75m and 2 km.