Answer:
[tex] \huge{ \boxed{ \sf{2.20 \: cm}}}[/tex]
Step-by-step explanation:
[tex] \star{ \sf{ \: altura \: de \: un \: cilindro\: = \: 8 \: cm}}[/tex]
[tex] \star{ \sf{ \: volumen \: de \: un \: cilindro = 122 \: cm \: cúbicos}} \: [/tex]
[tex] \star { \sf{ \: encontrar :radio \: de \: un \: cilindro }}[/tex]
[tex] \boxed{ \sf{ \: Volume \: of \: a \: cylinder \: = \: {\pi \: radius}^{2} \: height}}[/tex]
[tex] \mapsto{ \sf{122 \: = \: ( \frac{22}{7} )r \: ^{2} \: \times \: 8}}[/tex]
[tex] \mapsto{ \sf{122 = 25.14 \: {r}^{2} }}[/tex]
[tex] \mapsto{ \sf{25.14 \: {r}^{2} = 122 }}[/tex]
[tex] \mapsto{ \sf{ \frac{25.14 \: {r}^{2} }{25.14} = \frac{122}{25.14}}} [/tex]
[tex] \mapsto{ \sf{ {r}^{2} = 4.85 \: cm}}[/tex]
[tex] \mapsto{ \sf{r = 2.20 \: cm}}[/tex]
radio de un cilindro = 2.20 cm
[tex] \sf{espero \: haber \: ayudado!}[/tex]
[tex] \sf{atentamente \:}[/tex]!
~[tex] \sf{TheAnimeGirl}[/tex]