
To calculate: the difference of an elevation below sea level and above sea level.

Answer to Problem 48CR
the difference of an elevation below sea level and above sea level is
Explanation of Solution
Given information : consider, the elevation provided in the question,
Elevation below sea level =
Elevation above sea level =
Calculation : to evaluate the difference, it is needed that the elevation below the sea is negative and above the sea level is positive then to find their difference we add the opposite of (-30) with 118.
Hence,
Thus,the difference of an elevation below sea level and above sea level is
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