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> A square kilometer might have a billion trees. There are 1 million square meters in a square kilometer, so having a billion would require 1000 trees per squa
by bumbledraven 9y ago
> A square kilometer might have a billion trees.
There are 1 million square meters in a square kilometer, so having a billion would require 1000 trees per square meter.
> One person's year might have a billion heartbeats.
A person's heart beats around once per second, and there are only around 3 * 10^7 seconds per year. That's far from a billion (10^9).
- mncharity 9y agoExcellent. Thank you for the belay. Yes, that should have been "million trees" (order 1 tree/m^2 for pine forest; though orchard is order 0.1), and "a person's life" respectively. Meta: failure mode on both was switching/editing between several candidate examples in place, and not checking that the final edit was consistent. Including a sketch of the calculation is one way to make this less likely.