Question

The surface area of a cylinder is given by the polynomial 2*pi*r + 2*pi*h and a cylinder has a radius of 2 centimeters, how do you find the surface area of the cylinder?

Answer 1

Surface area `= 2pi(2+h)`

Explanation:

Since we haven't been given the height (`h`) for the cylinder,
the best we can do is provide a general formula replacing `r` with `2` in terms of a variable `h`

`color(white)("XXXX")` `A_(cylinder) = 2pi(2)+2pih`
`color(white)("XXXX")` `color(white)("XXXX")` `=2pi(2+h)`