The formula for the surface area of a cylinder is:
As you probably know, the diameter is 2 times the radius, so by dividing the diameter, 34, by 2, we get 17 to be the radius.
Now, just plug the numbers in:
That the teacher gave you extra credit
Divide the area of the banner by 4 and the perimeter by 4 as well P=39 A=374
4x would be considered a Term . 4 itself is a Coefficient and the x is a Variable.