A cube has a side of length `1.2 xx 10^(-2)m`. Calculate its volume.

Options

A. `1.7xx10^(-6) m^(3)`
B. `1.73xx10^(-6) m^(3)`
C. `1.70xx10^(-6) m^(3)`
D. `1.732xx10^(-6) m^(3)`

Answer

a

Explanation

`V=l^(3)=(1.2xx10^(-2) m)^(3)=1.728xx10^(-6) m^(3)`
`=1.7xx10^(-6) m^(3)`
Hence, `l` has two significant figures. Thus, V will also have two significant figures.