Answer:
552.92
Step-by-step explanation:
Surface area of a Cylinder formula is
2πr^2+2πrh
with this you use the information you already have and insert it but first you need a radius instead of a diameter so divide your diameter in half to get the radius...
Diameter:8 / 2= 4
radius is 4
Then knowing the height doesn't need to be changed you can follow through with the formula.
[tex]2\pi 4^{2} +2\pi 4*18[/tex]
