New South Wales contains 549 separate Protected Areas with a total land area of 4,953,271 hectares (6.18% of the state’s area). 150 of these are National parks, totalling 4,172,308 hectares (5.21% of the state’s area).
... side is now a perfect square; it is the square of (x + b/(2a)). The right side can be written as a single fraction; the common denominator is 4a2. W ...