The area is 126in^2
Hope this helps
Answer:
The volume increases at a rate of 
Step-by-step explanation:
The rate of change of the radius with respect to time is 4 mm / s.
So:

Now we must find a relationship between the volume of a sphere and its radius.
The equation of the volume of a sphere is:

So:

The diameter of the sphere is 100 mm. Therefore its radius is 100/2 = 50 mm.
So:

The volume increases at a rate of :
40000 π mm ^ 3 / s = 125663.71 mm^3/s
Answer:
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Step-by-step explanation:
To find V(6), we must plug in the number 6 for r in the equation.
<span>V(r)=9*pi*r^2
V(6) = 9*pi*(6)^2
= 9*pi*36 = 324*pi or </span><span>1017.88</span>