Question: Mount Roberts' peak in located within a property that encompasses how many acres?

Context paragraphs:
Sharp Mountain Preserve, Georgia: The Preserve at Sharp Mountain (also called The Sharp Mountain Preserve) is a nature-based community located near Jasper, Georgia in Pickens County.  It is one of three mountain communities in Pickens County, and the only one dedicated to maintaining its natural amenities.  There are 12 mi of paved roads running through the community, but the population density is intentionally low (approximately 300 lots over 1600 acre ranging in size from a minimum of 3 acre to a maximum of 37 acres.)  The Preserve at Sharp Mountain was named the "Best Community for Outdoor Lovers" by Pinnacle Living magazine, Unlike many planned communities, the Preserve at Sharp Mountain does not have swimming pools and tennis courts with club houses or golf courses.  Instead, the Preserve at Sharp Mountain offers many acres of green space, hiking and nature trails, a nature pavilion, waterfalls, a bird sanctuary, a butterfly garden and various nature parks.  The community is gated to restrict use of its 12 mi of privately owned roads to those living in the community.  The Preserve at Sharp Mountain was developed by Four Seasons originally, which later became Naterra Land.  Naterra's stated goal in all of its projects is "to better connect people with nature."  Naterra Land sold out all of its inventory in the Preserve, and control of the community is now governed by a Property Owners' Association (POA).  In 2011, the Preserve Association switched from being an HOA (Home Owners' Association) to being a POA (Property Owners' Association), each being viewed differently under Georgia law.  In 2008 the Preserve became a recognized member of the national Firewise communities program and is one of the 13 in Georgia.

Mount Roberts Tramway: The Mount Roberts Tramway is an aerial tramway located just south of downtown Juneau in the U.S. state of Alaska.  In operation since 1996, the tram makes a six-minute ascent of 3,819-foot (1,164 m) Mount Roberts from the cruise ship docks (just feet above sea level) to a height of about 1,800 feet (550 m).  A restaurant, theater, nature center and retail shops are located at the top of the tramway, as well as connections to trails leading both up and down the mountain.  One trail up the mountain leads to a large cross erected by Roman Catholic Father Brown in the early 1900s.

Camp Meeker, California: Camp Meeker is an unincorporated community, Sonoma County, United States, located on the Bohemian Highway, between Occidental and Monte Rio.  It has approximately 350 homes on properties ranging from a couple thousand square feet to many acres, some flat and sunny, some on steep narrow gauge railroad type one-way streets.  The population hovers around 425.

Mount Roberts (Alaska): Mount Roberts or Roberts Peak is a 3819 foot mountain just east of downtown Juneau, Alaska.  It is noted for its accessibility from downtown Juneau and for the Mount Roberts Tramway which carries passengers and tourists from sea level to 1800 ft up the mountain.

Sheep Creek (Juneau, Alaska): Sheep Creek is located 4 miles southeast of Juneau, in the U.S. state of Alaska.  The Juneau community of Thane was originally called Sheep Creek.  Draining an area of about 5 sqmi , it empties into Gastineau Channel.  The valley formed by the river has a flat, gravel, trekking trail of 3.5 mi , south of Mount Roberts.  The Snettisham hydroelectric dam substation is situated on a trail spur.  Sheep Creek Hatchery is located at the outflow.

Letchworth Village: Letchworth Village was a residential institution located in Rockland County, New York, in the hamlet of Thiells built for the physically and mentally disabled of all ages, from the newborn to the elderly.  Opened in 1911, Letchworth Village at its peak consisted of over 130 buildings spread out over many acres of land.  It was named for William Pryor Letchworth, who espoused reform in the treatment and care of the insane, epileptics, and poor children.

Castle in the Clouds: Castle in the Clouds (or Lucknow) is a 16-room mansion and 5500 acre mountaintop estate in Moultonborough, New Hampshire, opened seasonally to the public by the Castle Preservation Society, a private 501(c)3 non-profit corporation.  It overlooks Lake Winnipesaukee and the Ossipee Mountains from a rocky outcropping of Lee Mountain formerly known as "The Crow's Nest".

Mount Cramer: Mount Cramer, at 10716 ft is the second highest peak in the Sawtooth Range of Idaho.  The summit of Mount Cramer is located on the border of Custer and Boise Counties.  The peak is the highest point in Boise County.  Mount Cramer is also located within the Sawtooth Wilderness portion of the Sawtooth National Recreation Area.  The town of Stanley, Idaho is almost 14 mi from Mount Cramer, while the area known as Sawtooth City is nearly 12 mi from Mount Cramer.  The west side of Mount Cramer drains into the South Fork of the Payette River, while the east side drains to the Salmon River.

Mount Roberts (New Hampshire): Mt. Roberts is a mountain located in Carroll County, New Hampshire.  The peak is located within the Lakes Region Conservation Trust's Castle in the Clouds property.

Marla Glacier: Marla Glacier (Bulgarian: "ледник Марла" , ‘Lednik Marla’ \'led-nik 'mar-la\) is the 14 km long and 1.5 km wide glacier on the northeast side of Detroit Plateau on southern Trinity Peninsula in Graham Land, Antarctica, situated south of Aitkenhead Glacier and north of Diplock Glacier.  It is draining southeastwards along the east slopes of Povien Peak, then turning east between Mount Roberts and Bezenšek Spur, and flowing into Prince Gustav Channel in Weddell Sea.

Supporting paragraphs: Mount Roberts (New Hampshire) Castle in the Clouds
Answer: 5500