Juan is considering two cell phone plans. The first company charges$40 for the phone and $30 per month for the calling plan that
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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 .