How many seconds are there in one century? use 'e' for scientific notation.

3.1536E9 seconds

Explanation:

One century (100 years) is converted to seconds as follows:

(100 yr) x (365 day/yr) x (24 hr/day) x (60 min/hr) x (60 sec/min) = 3153600000 seconds

In scientific notation, this result is written as 3.1536E9 seconds.

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