averyana1120
contestada

4 in. If you'd like, you can use a calculator. 9 in. SA = 2πr² + 2πrh Use 3.14 for T. Find the surface area of a cylinder with a height of 9 inches and base radius of 4 inches. Do NOT round your answer. SA = [?] square inches



PLEASE HELP ASAP .​

4 in If youd like you can use a calculator 9 in SA 2πr 2πrh Use 314 for T Find the surface area of a cylinder with a height of 9 inches and base radius of 4 inc class=

Respuesta :

Answer: SA=326.56 inches

Step-by-step explanation:

[tex]SA=2\pi r^2+2\pi rh\\SA=2\pi r(r+h)\\r=4 \ inches\ \ \ \ \ h=9\ inches\ \ \ \ \ \ \pi =3.14\\Hence,\\SA=(2)(3.14)(4)(4+9)\\SA=(25.12)(13)\\SA=326.56\ inches[/tex]