How big is 28,400,000 circular inches?
It's about as big as a City Block (Manhattan)

The size of a City Block (Manhattan) is about 20,000,000 circular inches.
(per Bridges, William - 1811 Commissioner's Plan for New York City) (approximate)
It's about as big as The Great Banyan Tree

The size of The Great Banyan Tree is about 28,400,000 circular inches.
(a.k.a. The Great Banyan, a.k.a. Ficus benghalensis) (Acharya Jagadish Chandra Bose Indian Botanic Garden, Howrah, West Bengal, India)
It's about nine-tenths as big as The Biltmore Estate

The size of The Biltmore Estate is about 32,200,000 circular inches.
(Asheville, North Carolina) (house only)
It's about one-and-one-fifth times as big as Trafalgar Square

The size of Trafalgar Square is about 24,000,000 circular inches.
(a.k.a. Charing Cross) (City of Westminster, London, England, United Kingdom)
It's about one-and-four-fifths times as big as The Palace of Holyroodhouse

The size of The Palace of Holyroodhouse is about 16,000,000 circular inches.
(a.k.a. Holyrood Palace) (Royal Mile, Old Town, Edinburgh, Scotland, United Kingdom) (Palace without gardens)
It's about one-and-four-fifths times as big as Seal Island

The size of Seal Island is about 16,000,000 circular inches.
(Western Cape province, South Africa)
It's about half as big as The Lincoln Memorial Reflecting Pool

The size of The Lincoln Memorial Reflecting Pool is about 62,200,000 circular inches.
(Washington, D.C.) (pool surface area)
It's about two-and-a-half times as big as The White House

The size of The White House is about 12,000,000 circular inches.
(Washington, DC) (including wings)
It's about two-fifths as big as The Principality Stadium

The size of The Principality Stadium is about 80,000,000 circular inches.
(a.k.a. Stadiwm Principality, f.k.a. Millennium Stadium, f.k.a. Stadiwm y Mileniwm) (Cardiff, Wales, United Kingdom) (total footprint)
It's about two-fifths as big as Federation Square

The size of Federation Square is about 75,000,000 circular inches.
(Melbourne, Victoria, Australia)
It's about two-and-a-half times as big as a Football field
The size of a Football field is about 10,560,758.08 circular inches.
(American) (per NFL regulation)
It's about one-third as big as The Philippine Arena

The size of The Philippine Arena is about 79,000,000 circular inches.
(Ciudad De Victoria, Bocaue - Bulacan, Philippines) (total footprint)
It's about three times as big as Bill Gates' Home

The size of Bill Gates' Home is about 8,830,000 circular inches.
(Medina, Washington)
It's about three-tenths as big as a Polo field
The size of a Polo field is about 99,007,107 circular inches.
(for field polo) (United States Polo Association rules; unboarded side maximum)
It's about three-tenths as big as Rogers Centre

The size of Rogers Centre is about 101,000,000 circular inches.
(f.k.a. Skydome) (Toronto, Ontario, Canada) (entire complex)