Turkcell . 23:43 webwork.ticaret.edu.tr Logged in as nefise. orK eBworK 2017Fall

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Turkcell . 23:43 webwork.ticaret.edu.tr Logged in as nefise. orK eBworK 2017Fall-ENG227 Hw4 11 4: Problem 11 pt) Find the rate of increase (with respect to r) in the surface area (S-r?) of a spherical balloon when: (A) r = 2 inches-Rate of increase (B) r-3 inches Rate of increase (C) r-6 inches Rate of Increase ote: You can earn partial credit on this problem. u have attempted this problem 0 times. u have unlimited attempts remaining. Page generated at 12/09/2017 at 09:50pm EET WeBWorK © 2000-2007 lheweBWorkProiect

Explanation / Answer

Surface area is given by 4r2

Lets assume that initially , we have r= 1 inch, then the area = 4

A) r=2 inches, area = 16

Rate of Increase = [(16-4)/4] * 100 = 300% ( 3 times the original)

B) r=3 inches, area = 36

Rate of Increase = [(36-4)/4]*100= 800% ( 8 times the original)

c) r= 6 inches, area = 144

Rate of Increase = [(144-4)/4]*100= 3500% ( 35 times the original)

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