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If a snowball melts so that its surface area decreases at a rate of 4 cm ^ 2 / min. find the rate at which the diameter decreases when the diameter is 39 .

 Feb 18, 2021
 #1
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"If a snowball melts so that its surface area decreases at a rate of 4 cm ^ 2 / min. find the rate at which the diameter decreases when the diameter is 39 ."

Do you mean 39cm?  A big snowball!!

 

Can you take it from here?

 Feb 18, 2021
 #2
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Oops ! A is the surface area.

Guest Feb 18, 2021

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