Square
- See Article - Geometric Properties of Structural Shapes
Area of a Square formulas |
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Aarea=a2 Aarea=D′22 Aarea=4⋅r2 Aarea=2⋅R2 |
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Symbol | English | Metric |
Aarea = area | in2 | mm2 |
D′ = diagonal | in | mm |
a,b,c,d = edge | in | mm |
r = inside radius | in | mm |
R = outside radius | in | mm |
Square (a two-dimensional figure) is a quadrilateral with four equal side lengths and 90° interior angles.
- Abbreviated as SQ
- Circumcircle is a circle that passes through all the vertices of a two-dimensional figure.
- Diagonal is a line from one vertices to another that is non adjacent.
- Inscribed circle is the largest circle possible that can fit on the inside of a two-dimensional figure.
- Polygon (a two-dimensional figure) is a closed plane figure for which all edges are line segments and not necessarly congruent.
- Quadrilateral (a two-dimensional figure) is a polygon with four sides.
Circumcircle Radius of a Square formulas |
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R=a√2 R=D′2 |
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Symbol | English | Metric |
R = outside radius | in | mm |
D′ = diagonal | in | mm |
a,b,c,d = edge | in | mm |
a ∥ c
- b ∥ d
- a = b = c = d
- ∠A = ∠B = ∠C = ∠D = 360°
- 4 interior angles are 90°
- 2 diagonals
- 4 edges
- 4 vertex
Diagonal of a Square formulas |
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D′=a⋅√2 D′=√2⋅Aarea D′=2⋅R D′=2⋅r⋅√2 D′=2⋅R D′=P2⋅√2 |
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Symbol | English | Metric |
D′ = diagonal | in | mm |
Aarea = area | in2 | mm2 |
a,b,c,d = edge | in | mm |
r = inside radius | in | mm |
R = outside radius | in | mm |
P = perimeter | in | mm |
Distance from Centroid of a Square formulas |
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Cx=a2 Cy=a2 |
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Symbol | English | Metric |
C = distance from centroid | in | mm |
a,b,c,d = edge | in | mm |
Elastic Section Modulus of a Square formulas |
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S=a36 | ||
Symbol | English | Metric |
S = elastic section modulus | in3 | mm3 |
a,b,c,d = edge | in | mm |
Inscribed Circle Radius of a Square formulas |
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r=a2 r=P8 r=D2⋅√2 r=√Aarea2 r=R√2 |
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Symbol | English | Metric |
r = inside radius | in | mm |
Aarea = area | in2 | mm2 |
D′ = diagonal | in | mm |
a,b,c,d = edge | in | mm |
R = outside radius | in | mm |
P = perimeter | in | mm |
Perimeter of a Square formulas |
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P=4⋅a P=4⋅√Aarea P=2⋅D′⋅√2 P=4⋅R⋅√2 P=8⋅r |
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Symbol | English | Metric |
P = perimeter | in | mm |
Aarea = area | in2 | mm2 |
D′ = diagonal | in | mm |
a,b,c,d = edge | in | mm |
r = inside radius | in | mm |
R = outside radius | in | mm |
Side of a Square formulas |
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a=√Aarea | ||
Symbol | English | Metric |
a,b,c,d = edge | in | mm |
Aarea = area | in2 | mm2 |
Plastic Section Modulus of a Square formulas |
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Z=a34 | ||
Symbol | English | Metric |
Z = plastic section modulus | in3 | mm3 |
a,b,c,d = edge | in | mm |
Polar Moment of Inertia of a Square formulas |
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Jz=a46 Jz1=2⋅a43 |
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Symbol | English | Metric |
J = torsional constant | in4 | mm4 |
a,b,c,d = edge | in | mm |
Radius of Gyration of a Square formulas |
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kx=a2⋅√3 ky=a2⋅√3 kz=a√6 kx1=a√3 ky1=a√3 kz1=√23⋅a |
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Symbol | English | Metric |
k = radius of gyration | in | mm |
a,b,c,d = edge | in | mm |
Second Moment of Area of a Square formulas |
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Ix=a412 Iy=a412 Ix1=a43 Iy1=a43 |
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Symbol | English | Metric |
I = moment of inertia | in4 | mm4 |
a,b,c,d = edge | in | mm |
Torsional Constant formulas |
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J=2.25⋅(a2)4 | ||
Symbol | English | Metric |
J = torsional constant | in4 | mm4 |
a,b,c,d = edge | in | mm |