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alexandr402 [8]
3 years ago
12

The surface area, S, of a sphere of radius r feet is S = S(r) = 4πr2. Find the instantaneous rate of change of the surface area

with respect to the radius r at r = 4.
a. 32pi
b. 16pi
c. 64pi
d. 4pi
Mathematics
1 answer:
Ksju [112]3 years ago
8 0
S = 4πr^2
Instantaneous rate of change = dS/dr = 8πr
At r = 4, Instantaneous rate of change = 8π(4) = 32π.
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Answer:

78.5\ ft^{2}

Step-by-step explanation:

we know that

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then

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Y varies directly with x, and y = 5 when x = 4. What is the value of x when y = 8?
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miv72 [106K]

Answer:

<h3>4x^2/3</h3>

Step-by-step explanation:

Given the expression (8x)^2/3

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3 years ago
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