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

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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