Question

Mount Kosciuszko is the highest mountain in Australia with a peak of about 2,228 meters above sea level. Lake Erye has the lowest point at 15 meters below sea level. What is the difference in elevation between Mount Kosciuszko and Lake Erye

Answer 1

The difference in elevation between Mount Kosciuszko and Lake Erye​ = 2243 meters

Explanation:

Mount Kosciuszko is at a height of 2,228 meters above sea level

If sea level is taken to be zero = 0 meters

Mount Kosciuszko will be = + 2228 meters

Lake Erye is at 15 meters below sea level

Below sea level will make it negative

Lake Erye = - 15 meters

Difference in elevation = height of Mount Kosciuszko - height of Lake Erye​

$\begin{gathered} \text{Difference in elevation = +2228 - (-15)} \\ =\text{ 2228 + 15 } \\ \text{Note: multiplication of same sign gives a positive number} \\ =\text{ 2243} \end{gathered}$

The difference in elevation between Mount Kosciuszko and Lake Erye​ = 2243 meters