Question

the greatest possible length in which sed to measure exactly length 7m,3m85cm 12 m
195 CM​

Answer 1

7m = 700cm

3m 85 cm = 385 cm

12 m 95 cm = 1295 cm

HCF of 700,385 and 1295 is 35.

So to measure exactly, the greatest length we can use is 35cm.