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a submarine is 312 feet below sea level. A helicopter passes over the submarine at an altitude of 570 feet above sea level. what is the difference in the depth of the submarine and the altitude of the helicopter?

Sagot :

If you take the distance below sea level as a negative number, and the distance above sea level as a positive number. The difference in the depth of the submarine and the altitude of the helicopter is given by the difference between the distance above and below sea level, just as follow:

570 - (-312) = 882

Hence, the answer is 882 feet