Answer:
[tex]A=600\pi[/tex][tex]cm^{2}[/tex] ; Approx. 1884.95559215 [tex]cm^2[/tex]
Step-by-step explanation:
[tex]A=2\pi rh+2\pi r^2\\A=2\pi 10*20+2\pi 10^2\\A=400\pi +200\pi \\A=600\pi[/tex]
