There least common factor would be 5 since they are all divisible by 5.
There’s 60 seconds in a min
60x54=3240
F x L = 3x10^10
L = 1x10^-11
F= 3x10^10 / 1x10^-11 = 3x10^21 unit
The answer is (rounded to the nearest tenth) about 5.7 and since neither 18 or 2 have a perfect square, so this is irrational.
I need more detail like what the elevation of the fishes are
