The edge of a cube is `a=1.2xx10^(-2) m`. Then its volume will be recorded as:

Options

A. `1.72xx10^(-6) m^(3)`
B. `1.78xx10^(-4) m^(3)`
C. `1.7xx10^(-6) m^(3)`
D. `1.73xx10^(-9) m^(3)`

Answer

C

Explanation

`v=l^(3)=(1.2xx10^(-2)m)^(3) =1.728 xx10^(-8) m^(-3)`
length (l) has two significant figures, the volume (v) will also have two measurement are maximum. In this case the error in g is minimum.