To calculate circumference, you must use the equation (65)(2)(Pi) which would be 408.2pm. (IF YOU COUNT PI AS 3.14)
Answer:



Step-by-step explanation:
r = Radius
h = Height
Volume of cylinder = 

Surface area is given by

Differentiating with respect to radius we get

Equating with zero we get


So, the value of the function is minimum at 

So, the radius and height which would minimize the surface area is 1.05 feet and 2.12 feet respectively.
Surface area

The minimum surface area is
.
Answer: v=-81.92
Step-by-step explanation:

Multiply both parts of the equation by 8:

Answer:k=0.67
Step-by-step explanation:
Answer:
The answer is B since all parabolas have a domain of all real numbers