Precalculus Enhanced with Graphing Utilities
Precalculus Enhanced with Graphing Utilities
6th Edition
ISBN: 9780321795465
Author: Michael Sullivan, Michael III Sullivan
Publisher: PEARSON
Question
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Chapter A.2, Problem 53AYU
To determine

To find: How far can you see from the conning tower?

Expert Solution & Answer
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Answer to Problem 53AYU

5.477 miles

Explanation of Solution

Given:

The conning tower of the U.S.S. Silversides, a World War II submarine now permanently stationed in Muskegon, Michigan, is approximately 20 feet above sea level. How far can you see from the conning tower? [use the facts that the radius of Earth is 3960 miles and 1 mile = 5280 feet].

Calculation:

1 miles = 5280 feet .

1 foot =  1 5280  miles .

20 feet =  20 5280  miles =  1 264  miles .

By Pythagorean Theorem c 2  =  a 2  +  b 2 .

( 3960 +  1 264 ) 2  =  a 2  +  3960 2

15681630 =  a 2  + 15681600

a 2  = 30

a = 5.477

5.477 miles far can you see from the conning tower.

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