Answer :

=


We know that value of


From cube root table we get,


=


So by unitary method,


For difference (740 – 730 = 10 ) difference in cube root values = 9.045 – 9.004 = 0.041


For difference (732 – 730 = 2) difference in cube root values =


=


Thus, the required cube root is = = 9.012.


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