1×10^_19 meters
hope it helps you!!!!!
ANSWER:
ok 1 nanaometer equalsssss........uh u didnt give any specific lengths you want to know BUUUUT i'll just turn it into meters for you :D
1×10^−9 m this is in scientific notation for 0.000000001 m
~batmans wife dun dun dun.....
