Question

PLEASE HELP I GIVE THANKS

Answer 1

The formula for a cylinder's surface area is
`2\pi rh+2\pi { r }^( 2 )` .
In this question h=x
Let's plug the values to solve.


`2\cdot \pi \cdot 4\cdot 12+2\cdot \pi \cdot { 4 }^( 2 )\\ 96\pi +32\pi =128\pi \quad square\quad units`

The answer is D