Question

Conversion- from prefix to the base

1) 4000mm
2) 0.00000008Tb
3) 486dA
4) 0.002μW
5) 987GC

Answer 1

1) 4 m

Prefix "milli" (m) means
`10^(-3)`. Therefore:

`4000 mm = 4000 \cdot 10^(-3) m = 4 m`

2)
`8\cdot 10^4 b`

Prefix "Tera" (T) means
`10^(12)`. Therefore:

`0.00000008Tb = 0.00000008 \cdot 10^(12) b =80000 b = 8\cdot 10^4 b`

3) 48.6 A

Prefix "deci" (d) means
`10^(-1)`. Therefore:

`486 dA = 486\cdot 10^(-1) A = 48.6 A`

4)
`2\cdot 10^(-9) W`

Prefix "micro" (
`\mu`) means
`10^(-6)`. Therefore:

`0.002 \mu W = 0.002 \cdot 10^(-6) W = 2\cdot 10^(-9) W`

5)
`9.87\cdot 10^(11) C`

Prefix "giga" (G) means
`10^9`. Therefore:

`987 GC = 987 \cdot 10^9 C = 9.87\cdot 10^(11) C`