Question

How many feet are in a light year?

Answer 1

1 ly = 3.10396 E+16 feet.

Explanation:

1 light second = 299792.458 km.
1. km = 0.621371 mile.
1 mile = 5280 feet'
1 year = 365.256 day..
1 day = 86400 sec,
1 ly = (1 ls in feet) X (1 year in seconds)
So, 1 ly = (299792.458 X 0.621371 X 5280) X( 395.256 X 86400) feet