Question

Find the surface area of the cylinder in terms of pi

Answer 1

Answer:
`522\pi`
`sq. inches`

Explanation:

• formula for surface area of cylinder =
  `2\pi r^(2) +2\pi rh` , where r is radius of cylinder given 9 inches and h is height of the cylinder which is 20 inches.
• putting the values we get,

`2\pi (9)^(2) +2\pi (9)(20)\\162\pi +360\pi \\=522\pi sq. inches`