Making use of the cube root table, find the cube root of the following (currect to three decimal places):

732

=

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.