tjohnston7655 tjohnston7655
  • 13-01-2018
  • Mathematics
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What is the surface area-to-volume ratio of the spherical barrel cactus

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altavistard
altavistard altavistard
  • 13-01-2018
Surface area of a sphere:  A = 4pi*r^2; volume of a sphere:  V = (1/3)*pi*r^3
                                           4*pi*r^2
The desired ratio is A/V = ----------------- = 4(3) / r, where r is the radius of the 
                                           (1/3)*pi*r^3                  sphere.
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