In this question , it is given that we have a cylinder with with a radius of 9 and a surface area of approximately 791.68 units square.
The formula of surface area of cylinder is

Substituting the values of A and r, we will get

So the height of the cylinder is 5 units .
179 / 9 is about 20
exact = 19.888888
Answer:
A+B=B+A
B+0=B
E-C=E+(-C)
Step-by-step explanation: