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## Homework Statement

Earth’s radius is 6370 km and approximately 70% of

its surface is covered with water, to an average depth

of 12,000 feet. Calculate the approximate volume, in

km

3

, m

3

, cubic miles and gallons of Earth’s oceans.

## Homework Equations

## The Attempt at a Solution

I was told to find the area and to multiply by the avrg depth but i am still confused.