Question: Kew Cottages is located in the eastern suburb of Melbourne how far away from the Central Business District?

Context paragraphs:
Kew East, Victoria: Kew East is a suburb of Melbourne, Victoria, Australia, 8 km east from Melbourne's Central Business District.  Its local government area is the City of Boroondara.  At the 2011 Census, Kew East had a population of 6,017.

Kew, Victoria: Kew is an inner suburb of Melbourne, Australia, 6 km east from Melbourne's Central Business District.  Its local government area is the City of Boroondara.  At the 2011 Census, Kew had a population of 23,876.

Vaucluse, New South Wales: Vaucluse is an affluent eastern suburb of Sydney, in the state of New South Wales, Australia.  Vaucluse is located 8 km north-east of the Sydney central business district, in the local government areas of Waverley Council and the Municipality of Woollahra.

Watsons Bay, New South Wales: Watsons Bay is a harbourside, eastern suburb of Sydney, in the state of New South Wales, Australia.  Watsons Bay is located 11 km north-east of the Sydney central business district, in the local government area of the Municipality of Woollahra.

Rose Bay, New South Wales: Rose Bay is a harbourside, eastern suburb of Sydney, in the state of New South Wales, Australia.  Rose Bay is located seven kilometres east of the Sydney central business district, in the local government areas of Waverley Municipal Council (east of Old South Head Road) and Woollahra Council (on its western side towards the bay).

Tamarama, New South Wales: Tamarama is a beachside suburb, eastern suburb of Sydney, in the state of New South Wales, Australia.  Tamarama is 6 kilometres east of the Sydney central business district, in the local government area of Waverley Council.  Tamarama is affectionately nicknamed "Glamarama" (or Glamourama) by the locals, as it is a beach where wannabe trend setters come to sunbathe and swim or simply try to be seen.

Darlinghurst, New South Wales: Darlinghurst is an inner-city, eastern suburb of Sydney, New South Wales, Australia.  Darlinghurst is located immediately east of the Sydney central business district (CBD) and Hyde Park, within the local government area of the City of Sydney.

Kew Cottages: Kew Cottages aka Kew Idiot Asylum, Kew Idiot Ward, Kew Children's Cottages and finally as Kew Residential Services is a decommissioned special development school and residential service located in Kew, an eastern suburb of Melbourne, Victoria, Australia.

Woolloomooloo: Woolloomooloo ( ) is a harbourside, inner-city eastern suburb of Sydney, New South Wales, Australia.  Woolloomooloo is 1.5 kilometres east of the Sydney central business district, in the local government area of the City of Sydney.  It is in a low-lying, former docklands area at the head of Woolloomooloo Bay, on Sydney Harbour.  The Domain sits to the west, the locality of East Sydney is near the south-west corner of the suburb and the locality of Kings Cross is near the south-east corner.  Potts Point is immediately to the east.

Paddington, New South Wales: Paddington is an inner-city, eastern suburb of Sydney, in the state of New South Wales, Australia.  Located 3 kilometres east of the Sydney central business district, Paddington lies across two local government areas.  The portion south of Oxford Street lies within the City of Sydney, while the portion north of Oxford Street lies within the Municipality of Woollahra.  It is often colloquially referred to as "Paddo".

Supporting paragraphs: Kew Cottages Kew, Victoria
Answer: 6 km east