The formula of the radius can be simply derived by dividing the diameter of the circle by two. Radius $${\rm{ = }}\frac{{{\rm{Diameter}}}}{{\rm{2}}}$$ Circle: Tangent

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## Radius Formula of a Circle Using Diameter, Area

Bohr Radius Formula [Click Here for Sample Questions] The formula of Bohr radius is. a 0 =4πε 0 (h/2π) 2 /m e e 2 =(h/2π)/m e cα. Where, a o = Bohr radius. m e =rest mass of

## Equation of a Circle

Formulas for Radius r is the radius of the circle d is the diameter of the circle C is the circumference of the circle A is the area of the circle

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