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A cube has a side of length 1.2xx10^(-2)...

A cube has a side of length `1.2xx10^(-2)m`. Calculate its volume

A

`1.7xx10^(-6)m^(3)`

B

`1.73xx10^(-6)m^(3)`

C

`1.78xx10^(-6)m^(3)`

D

`1.732xx10^(-6)m^(3)`

Text Solution

Verified by Experts

The correct Answer is:
A
Here,
Length of the cube, `L=1.2xx10^(-2)m`
Volume of the cube, `V=(1.2xx10^(-2)m)^(3)=1.728xx10^(-6)m^(3)`
As the result can have only two significant fiures, therefore, on rounding off, we get `V=1.7xx10^(-6)m^(3)`
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