A circle with an area of 100 square miles has a radius of 5.6418 miles.
Or, 5 miles, 1,129 yards, 1 foot, 8.5 inches - more or less.
x2 + y2 = 4.
x² + y² = 25.
Can be centred anywhere. The circle x^2 + y^2 = z^2 is centred at the origin. X, y & z do not require to be different.
x2 + y2 = r2 gives a circle centred on the origin, radius r.
x2 + y2 = r2 describes a circle, radius r, centred on the origin. r is thus sqrt(25 + 144) ie 13 units.
x2 + y2 = 4.
x² + y² = 25.
Can be centred anywhere. The circle x^2 + y^2 = z^2 is centred at the origin. X, y & z do not require to be different.
x2 + y2 = r2 gives a circle centred on the origin, radius r.
x2 + y2 = r2 describes a circle, radius r, centred on the origin. r is thus sqrt(25 + 144) ie 13 units.
Standard equation for a circle centred at the origin is x2 + y2 = r2 where r is the radius of the circle. If you increase the size of the circle then the radius must increase, so r2 will be larger. eg a circle of radius 2 has the equation x2 + y2 = 4, if the radius increases to 3 then the equation becomes x2 + y2 = 9
The radius of the circle.
The radius of a circle is half the circle's diameter
the radius of a circle is r
Radius of a circle= Perimeter of the circle/2*pi Radius is half the diameter Radius is the length of a straight line from the center point of the circle to the edge of the circle.
The radius of a circle is half the diameter so if the radius of a circle is r, then the diameter is 2r.
The radius of a circle is halve the circle's diameter.