Question

PLEASE HELP I GIVE THANKS

Answer 1

The formula for a cylinder's surface area is, as I said before :
`\\ 2\pi rh+2\pi { r }^( 2 )` in this question, h=x

Let's plug the values and solve :


`2\pi rh+2\pi { r }^( 2 )\\ \\ 2\cdot \pi \cdot 5\cdot 12+2\cdot \pi \cdot { 5 }^( 2 )=2\cdot \pi \cdot 60+2\cdot \pi \cdot 25=120\pi +50\pi =170\pi \quad square\quad units\\ Answer\quad is\quad A`