Extensions of groups (Ex)

Are there extensions of groups

Tex syntax error

$<wikitex>; Are there extensions of groups 1 \to H \to G \to \IZ$ such that $G$$G$ is hyperbolic?

\to H \to G \to \IZ$ such that $G$ is hyperbolic? [[Category:Exercises]] [[Category:Exercises without solution]]1 \to H \to G \to \IZ such that $G$$G$ is hyperbolic?