Answer:
A≈61.94
Just plug it into a calculator
Answer:

Step-by-step explanation:
The graph of the two functions are shown on the same diagram in the attachment above;
The solution to the equation
is where the two graphs intersected.
These points are

Answer:
V=1,244.071
Step-by-step explanation:
I put the answer in decimal form and rounded up from .0706, but pi form in included in the pic. I hope this helped! Please leave Brainliest if it did and is right.
the radius: r^2 = 81
r =9
c = 2*pi*r
= 2 * pi * 9
= 18 *pi
Answer: 18*pi or approximately 56.62