The radius of a sphere is decreasing at a rate of 2 cm/sec. At the instant when the radius of the sphere is 3 cm, what is the rate of change, in cm2/sec, of the surface area of the sphere? (The surface area of a sphere is A = 4πr2.) * -72n O -48Tt O 24m -108Tt

The radius of a sphere is decreasing at a rate of 2 cm/sec. At the instant when the radius of the sphere is 3 cm, what is the rate of change, in cm2/sec, of the surface area of the sphere? (The surface area of a sphere is A = 4πr2.) * -72n O -48Tt O 24m -108Tt

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter2: Equations And Inequalities

Section2.1: Equations

Problem 74E

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Question

The radius of a sphere is
decreasing at a rate of 2 cm/sec.
At the instant when the radius of
the sphere is 3 cm, what is the
rate of change, in cm2/sec, of the
surface area of the sphere? (The
surface area of a sphere is A =
4Ttr2.) *
O -72n
O -48t
O 24n
O -108n

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