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A cube has a side of length 1.2 xx 10^(-...

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

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)`

Text Solution

Verified by Experts

The correct Answer is:
A
`V = l^(3) = ( 1.2 xx 10^(-2) m)^(3) = 1.728 xx 10^(-6) m^(3) = 1.7 xx 10^(-6) m^(3)`
Hence , `l` has two significant figures . Thus , `V` will also have two significant figures.
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