Question

Determine the longest tape which can be used to measure exactly the lengths 6 m 58 cm. 9 m 40 cm and 11 m 28 cm using hcf

Answer 1

Explanation:

Need HCF of 658 940 and 1128

= 94 cm Using a HCF calculator ....or you can use the prime factorization method:

658 = 2 x 7 x 47

940 = 2 x 2 x 5 x 47

1128 = 2 x 2 x 2 x 3 x 47 the common factors are 2 and 47 2 x 47 = 94 cm