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Recognised as 2D shape

Circle with radius 400

  • Circle
  • r = 400
  • area 502,654.8246

A circle of radius 400 has an area of 502,654.824574 square units and a circumference of 2,513.274123 units. Its diameter is 800, and its area expressed exactly is 160,000π.

Measurements

r
Radius400
Diameter800
Circumference2,513.274122872πr
Area502,654.82457437πr²
Area in terms of π160,000π
Sector area per degree1,396.2634016
Arc length per degree6.98131701
Inscribed square side565.68542495the largest square that fits inside
Circumscribed square side800

Formulas used

AreaA = πr²
CircumferenceC = 2πr

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Every value on this page was computed from “circle radius 400” by Nerdulator’s geometry engine. Nothing here was retrieved from a database of answers or written by a model.