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July 31, 2015

Homework Help: Solved-Calculus-Please check?

Posted by Liliana on Wednesday, April 24, 2013 at 2:20pm.

the equatorial radius of the earth is approximately 3960 miles. suppose a wire is wrapped tightly around the earth at the equator. how much must this wire be lengthened if it is to be strung on 10 feet poles above the ground? (1 mile=5280 feet)

delta y= dy/dx (2pir) * deltax
delta y= 2pi * 10/5280
delta y= 20pi/5280

is this right or no? thanks

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