Answer:
C=2 x pi x radius
Step-by-step explanation:
The nail will stick to the magnet because it will become magnetized.Also because the north pole in the magnet rearranges the magnet domains inside the steel so that their south poles all point toward the north pole of the permanent magnet
I would try to answer, but you didn’t put any options to choose from.
When

you would have to use comon multiples to find what both numbers have in common, a short way of finding this would be

where (a) is the answer of the equation, (a) would be 2 because 8*2=16 meaning