\fdO'^ - Old Forge Coal Mines

(140) (^) 1^ = /72.
ARITHMETIC. 85
1 4/2.0 O'OO'OO'OO = 1. 41421356 -f
1_
1
20 100
4 96
24 400
4 281
280 11900
1 11296
281 60400
1 56564
2820 28284 3836.0000 ) ( .13562 or .1356 +
4 28284
2824 100760
4 84852
28280 159080
2 141420
28 2 82 176600
2 169704
28284 6896
1
L
20
_i
1 — n
i/1.41'42'13'5 6 =1.1892+ Ans.
21
21 2042
1 1824
220 21813
8 213 21
22 8 4 9 2 5 6 It is required in this prob-
8 4 7 5 6 4 1^"^ to extract the fourth
2 3 6 1692 root of 2 to four decimal
9 places; hence, we must ex-
2 3 6 9 tract the square root twice,
9 since ^ = |/ of the |/ .
2 3 7 8 In the first operation we carry the root to 8
2 decimal places, in order to carry the root in the
23 7 8 2 second operation to 4 decimal places.