Dennis Hopper was 42 in Apocalypse Now when he played the character 'Photojournalist'.
That was over 45 years ago in 1979.
In 2010 he died aged 74, starring in 216 films in his career, 174 of those after Apocalypse Now was first released. If he were alive today he would be 88.
In Apocalypse Now, I think Dennis Hopper looks: