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 November 27th, 2007, 12:02 PM #1 Newbie   Joined: Nov 2007 Posts: 8 Thanks: 0 Thank you much! Now, I have another question... It is about Earth Math, and I need the answer REALLY soon, for I have a test this Friday! 1. How many square miles do all three of the Earth's largest oceans cover? And~ 2. Use the average depths of the Pacific, Atlantic and Indian oceans, in feet, to determine the average depth of the earth's oceans in miles. Both give no numbers, and I am at a total loss at what to do...
 November 27th, 2007, 12:43 PM #2 Global Moderator     Joined: Nov 2006 From: UTC -5 Posts: 16,046 Thanks: 938 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms The first question you basically look up and remember. There are lots of ways to calculate it based on what you know (and how precise you need the result to be), but without knowing more I'd just suggest Googling it: http://google.com/search?q=area%20of%20 ... ic%20ocean http://google.com/search?q=area%20of%20 ... ic%20ocean http://google.com/search?q=area%20of%20 ... an%20ocean The second question can be answered differently based on how much you know. You're probably being asked to calculate (area of A * depth of A + area of P * depth of P + area of I * depth of I) / (area of A + area of P + area of I). Perhaps you're being asked as little as (depth of A + depth of I + depth of P) / 3, although that's not a great estimate.

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