# General Information, Facts & Tables [Square Calculator]

Page Topics:

Overview

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A square is a four sided plane figure (quadrilateral) with all sides and (right 90º) angles equal.

See Also: Open Another, Using the Calculators

Note! Calculator Under Construction.(adding measurement unit values)

Image

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Formula

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 Required Known Side (S) Diameter (D) Perimeter (P) Area (SA) Circumscribed. Circle Radius (R) Inscibed Circle Radius (r) Side (S) - S = (D * Ö2) / 2 - S = P / 4 S = ÖSA S = R * Ö2 S = r * 2 Diameter (D) D = S * Ö2 - D = (P x Ö2) / 4- D = Ö(2 * SA) D = R / 2 D = Perimeter (P) P = 4 * s P = D * 2 * Ö2 - P = ÖSA * 4 P = P = r * 8 Area (SA) SA = S2 SA = D 2 / 2 SA = P2 / 16- - SA = SA = (r * 2)2 Circumscribed Circle Radius (R) R  =S / 2 R = D / 2 R = R = - R = Ö(2 *r 2) Inscribed Circle (r) r = S r = r = P / 8 r = (ÖSA) / 2 r = Ö(R2 / 2) -

Units

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S = Side.
D = Diagonal
r = Inscribed circle radius (1/2 the diagonal (D) length).
R = Circumscribed circle radius (1/2 the length of a side (S)).
SA = Surface Area.
P = Perimeter ( not shown on diagram)= 4 x length of side (S).
H = Half length of side (equal to r)
h = Half corner angle (45º)

Calculator

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 S: [] D: [] P: [] SA: [] R : [] r: []

Note! Set unit values prior to calculating.

Notes

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Variables are in blue text
Numbers are in red text
Operators are in green text