________________
CHAPTER II-ARITHMETICAL OPERATIONS.
the (number represented by the figure in the next) ghana placo (after it is taken into position) the cube (of this same quotient).
54. One (figure in the various groups of three figures) is cubio: two are non-cubie. Divide (the non-cubie figure) by three times the square of the cube root. From the (next) non-enbie (figure) subtract the square of the quotient (obtained as above and) multiplied by three times the previously mentioned (cube-root of the highest enbe that can be subtracted from the previous cubie figure) and (then subtract) the cube of the (above, quotient (from the next cubic figure as taken into position: With the help of the cube-rt-figures (so obtained (and taken into position, the procedure is) as before.
Examples in illustration thereol.
55. What is the cube root of the numbers beginning with 1 and ending with 9, all cubed; and of 4013; and of 1860867?
56. Extract the cube root of 13821. 36926087 and 618170208.
consist of one Ao or three figures, as the case may be. will be clear from the following worked out example. To extract the cube root of 77308776:
gh.
bi
gh.....
bi.....
T
.. 2 x 3 x 1
* 4. W.
7
73
15
+ x - 1)133(2
IN
24
1
... 6 x 12
370
48
322N 8
... 42 x 5292)32207(6
31752
4536
216 216
*
" X
19
The rule mentioned
Litt 7
7
6
Cube root 121.
but it is meant The rule does not state what figures constitute the cube rent that the cube root is the number made up of the figures which are enbed in this operation, written down in the order from above from left to right
