Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.
Q: The colony of Buenos Aires was founded in 1536. Temporarily abandoned, it was re-founded in 1580 by the governor, Juan de Garay. The governate of Rio de la Plata was established after the new viceroyalty of Peru took territory away from New Spain. Itinerary: Arrival, Buenos Aires, Rio de la Plata River, At Sea, Puerto Madryn, At Sea, Magellan Strait, Punta Arenas, Passage Cape Hoorn, Beagle Canal, Darwin Canal, Ushuaia, Scenic cruising through chilenean fjords, Castro, Puerto Montt, At Sea, Valparaiso, Coquimbo, At Sea, Iquique, At Sea, Callao About 11 miles wide at its upper end, the width of the delta grows to roughly 40 miles at the river mouth, where the separated branches of the Parana flow into the Rio de la Plata, about 200 miles from Diamante. To those who regard the Rio de la Plata as a river, it is the widest in the world, with a total area of about 13,500 square miles. Plata definition, Rio de la [ree-aw th e lah] /ri l/ (Show IPA) an estuary on the SE coast of South America between Argentina and Uruguay, formed by the Uruguay and Parana rivers, about 185 miles (290 km) long. See more. Plata definition, Rio de la [ree-aw th e lah] /ri l/ (Show IPA) an estuary on the SE coast of South America between Argentina and Uruguay, formed by the Uruguay and Parana rivers, about 185 miles (290 km) long. Also, La Plata. Also called Plata River; British, River Plate. Full-Day Tour (8 hours):Make your way to central Buenos Aires, where you'll meet your guide and board a boat for a river cruise to Tigre. Learn about the history of the delta as you glide along the Costanera Navigation Canal past Buenos Aires' shoreline landmarks. "The House is located in a batch of 21,60 meters long, with a significant slope of 8,50 meters from the +/-0,00 to its highest point in the gully of San Isidro. This gully is testimony of the original coast and the won surface into the Rio de la Plata river throughout our short history, reason for which it seemed to us important to alter it as little as possible. The Rio de la Plata rendered River Plate in British English and the Commonwealth and La Plata River in other English-speaking countries is the estuary formed by the confluence of the Uruguay and the Parana rivers. It empties into the Atlantic Ocean, forming a funnel-shaped indentation on the southeastern coastline of South America. Depending on the geographer, the Rio de la Plata may be considered a river, an estuary, a gulf or a marginal sea. For those who consider it a river ... La Plata River. Written By: La Plata River, Spanish Rio De La Plata, river in east-central Puerto Rico, rising on the western slope of Mount Santa (2,963 feet [903 metres]), a peak of the Sierra de Cayey. Part of the stream is impounded by Lake Carite; the reservoir's outlet diverts waters for a series of hydroelectric stations on the Guamani River in the coastal Guayama area to the south. Query: how long is the rio de la plata river
A:
The rio de la plata river, about 185 miles or 290 km long.