Answer:
176 (Pi)
Step-by-step explanation:
The formula is given to you. Just plug in the values. You need the radius, r, which is 4. (You are given the diameter of 8 cm, so the radius is always just half of the diameter.)
Surface area= 2 X pi X (radius squared, which is 4 squared, or 16.) + 2 X pi X radius (which is 4) X height (which is 18 cm)
2 X pi X 16 + 2 X pi X 4 X 18
32(pi) + 144 (pi)
176 (pi)
