Free and Discounted Ebooks
Join 130,000 readers! Get our ebook deals straight to your inbox.

Instruction for Using a Slide Rule

Cover image for

Download


Author: W. Stanley
Language: English
Wordcount: 5,443 / 24 pg
Flesch-Kincaid Reading Ease: 79
LoC Category: LT
Downloads: 1,396
Added to site: 2006.12.30
mnybks.net#: 15678
Origin: gutenberg.org
Genre: Instructional
Excerpt

Since there are 3 digits in the given number, we set the indicator on 185 in the right-hand third of the K scale, and read the result 570 on the D scale. We can place the decimal point by thinking of the nearest perfect cube, which is 125. Therefore, the decimal point must be placed so as to give 5.70, which is nearest to 5, the cube root of 125.

Example 42: cuberoot( .034 ) = .324

Since there is one zero between the decimal point and the first digit not zero, we must set the indicator over 34 on the middle third of the K scale. We read the result 324 on the D scale. The decimal point may be placed as follows:

cuberoot( .034 ) = cuberoot( 34/1000 ) = 1/10 cuberoot( 34 )

The nearest perfect cube to 34 is 27, so our answer must be close to one-tenth of the cube root of 27 or nearly 0.3. Therefore, we must place the decimal point to give 0.324. A group of examples for practice in extraction of cube root follows:

Example 43: cuberoot(

SUBSCRIBE TO MANYBOOKS 

FREE EBOOKS 

Join 120,000+ fellow readers! Get Free eBooks and book bargains from ManyBooks in your inbox. 

We respect your email privacy

(advanced)
login | register

User ID

Password

reset password

Author of the Day

Rob Sinclair
Rob Sinclair promised his wife that he could pen a “can’t-put-it-down thriller” and, three books later, he is still doing it. Today he talks to us about keeping his books fresh in a genre known for its tropes, the key to writing good action scenes and which actor could best fill the shoes of Carl Logan.
Read full interview...