Asked by Ashley

An ice cube is 3 by 3 by 3 inches is melting in such a way that the length of one of its side is decreasing at a rate of half an inch per minute. Find the rate at which its surface area is decreasing at the moment when the volume of the cube is 8 cubic inches

Answers

Answered by Steve
v = s^3
dv/dt = 3s^2 ds/dt

now just plug in your numbers.
Answered by Scott
s.a. = 6 s²

da/dt = 12 s ds/dt

v = s³ ... 8 = 2³
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