Question

who many type of volcanos?

Answer 1

There are three main types of volcano - composite or strato, shield and dome. 

Answer 2

$there \: are \: three \: types \: of \: volcanos \\ \\ \\ 1.avtive \: volcanoes = erupt \: frequently \: and \: \\ throw \: out \: lava. \\ \\2. dormant \: volcanoes = are \: called \: sleeping \: volcanoes. \\ \\ 3.extinct \: volcnoes = have \: erupted \: not \: in \: known \: historicl \: period$