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06.05.2020 •
Mathematics
The radius of a right circular cylinder is increasing at a rate of 9.5 inches per minute and the height is decreasing at a rate of 11.5 inches per minute. What is the rate of change of the surface area when the radius is 16.5 inches and the height is 31 inches?
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Ответ:
The rate of change of the surface area is 2,629 inches per minute.
Step-by-step explanation:
Given that,
The height is decreasing at a rate of 11.5 inches per minute and the radius of a right circular cylinder is increasing at a rate of 9.5 inches per minute.
and
r = radius of the right circular cylinder
h= height of the right circular cylinder
The surface area of the right circular cylinder= 2π(r²+rh)
A=2π(r²+rh)
Differentiating with respect to t
Now plug the value of and .
The rate of change of the surface area when the height is 31 inches and radius is 16.5 inches.
r = 16.5 inches, h = 31 inches
=2,629 inches per minute
The rate of change of the surface area is 2,629 inches per minute.
Ответ:
-58185.70868
Step-by-step explanation:
Ello, so basically yh
the way u work this out is by: go on google nd ask this same maths question
and then the anwer will come.