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

Options

A. `1.7 xx 10^(-6)m^(3)`
B. `1.73 xx 10^(-6)m^(3)`
C. `1.70 xx 10^(-6)m^(3)`
D. `1.732 xx 10^(-6)m^(3)`

Answer

A

Explanation

Here
Length of the cube,`L = 1.2 xx 10^(-2) m`
Volume of the cube ,`V = (1.2 xx 10^(-2)m)^(3)`
`= 1.728 xx 10^(-6)m^(3)`
As the result can have only two significant figure therefore , on rounding off, we get
`V = 1.7 xx 10^(-6) m^(3)`