Question

How long (in centimeters and years) was the Precambrian period to the rest of the scale?

Answer 1

Total length of Precambrian period is
`6` meter
`45` centimetres

Step-by-step explanation:

Precambrian period has two major sub divisions

a) Archean (oldest) and

b) Proterozoic

The length of Precambrian period would be equal to the sum of length of Archaean eon and the Proterozoic eon.

The length of Proterozoic eon
`= 240 + 55\\`

`= 295`

Or

`2` meter
`95` centimetres

The length of Archean eon
`= 3` meter
`50` cm

Total length of Precambrian period
`= 295 + 350\\`

`= 645` centimetres

Or

`6` meter
`45` centimetres