Question

How many nanoseconds are in a year?

Answer 1

1 year = 3.1556926 × 10^16 nanoseconds

hope this helps!!

Answer 2

(1 year) x (86,400 sec/day) x (365-1/4 day/yr) x (10⁹ nanos./sec)

= (1 x 86,400 x 365-1/4 x 10⁹) nanosec

= 31,557,600 x 10⁹ nanosec

= 3.15576 x 10¹⁶ nanosec

(This is a rough answer, because the 'year'
is not exactly 365-1/4 days.)