How many kilometers is the coastal town, located within the Electoral district of Gosford, north of Sydney?
Electoral district of Gosford: Gosford is an electoral district of the New South Wales Legislative Assembly in Australia. Electoral district of Gosford:  The electorate covers the western parts of the City of Gosford, including central Gosford and Woy Woy. Woy Woy, New South Wales: Woy Woy is a coastal town and a southern suburb of the Central Coast region of New South Wales, Australia, located on the southern reaches of Brisbane Water 79 km north of Sydney.
79