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

833

=

We know that value of

From cube root table we get,

=

So by unitary method,

∵ For difference (840 – 830 = 10 ) difference in cube root values = 9.435 – 9.398 = 0.037

∴ For difference (833 – 830 = 3) difference in cube root values =

= = 9.409

Thus the required cube root is = 9.409.