What is radical, index and radicand? Explain with an example.

Find the cube of the following numbers:

$19$

Find the cube of the following number:

$26$

Find the cube of the following number:

$49$

Find the cube of the following number:

$123$

Find the cube of the following by the column method:

$39$

Find the cubes of the following by the column method:

$46$

Find the cube of the following by the column method:

$91$

Find the cube of the following by the column method:

$87$