Find the length. Math.?

The Bermuda Triangle is a triangular region in the Atlantic Ocean where many ships and airplanes have disappeared. The perimeter of the triangle is about 3,075 miles. It is formed by three imaginary lines. The first, 1,099 miles long, is from Melbourne, Florida, to Puerto Rico. The second, 1,001 miles long, stretches from Puerto Rico to Bermuda. The third extends from Bermuda back to Florida. Find its length.