Explanation:
(a) To convert feet to fathoms, we can use the conversion factor 1 fathom = 6 feet. Hence, we can divide the depth in feet by 6 to find the depth in fathoms:
36,078 feet / 6 feet/fathom = 6,013 fathoms
So the depth of the seabed is 6,013 fathoms.
(b) To convert feet to leagues (marine), we can use the conversion factor 1 league (marine) = 5,556 feet. Hence, we can divide the depth in feet by 5,556 to find the depth in leagues (marine):
36,078 feet / 5,556 feet/league (marine) = 6.52 leagues (marine)
So the depth of the seabed is approximately 6.52 leagues (marine).