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© Chandler-Gilbert Community College Learning Center
Geometric Formulas
Shape General Formulas Picture
sideS=
Perimeter: 2 2P LW= +
widthW= lengthL=
Area: A LW= ⋅
Perimeter: 4PS=
2
Area: A SS S=⋅=
22
Area:
4 Ar d π π = =
Arc Length: ( in radians)sr θθ= ⋅θ
r s heighth= baseb= Rectangles
Squares Triangles diameterd= radiusr= Circles 1
Area: A
2 bh= ⋅ Parallelograms 21
Area of Sector: ( in radians)
2 s Ar θθ= ⋅
Circumference: 2C rd ππ= =
Area: Aab π= ⋅⋅
- 22
Side Length Relationship: cab= +
Right Triangles c a b Trapezoids Ellipses
- )
12 1
Area: A
2 bbh= +⋅
Area: ALh= ⋅
h L h 1 b 2 b b a
© Chandler-Gilbert Community College Learning Center
Shape General Formulas Picture
2
Volume: Vrh π=
2
Surface Area (with top and bottom):
SA 2 2rh r
ππ= +
3
Volume: Vsss s=⋅⋅=
Volume: VLW H=⋅⋅
Surface Area (with top and bottom):
SA 2 2 2LW LH WH= ++
2
Surface Area (with top and bottom): SA 6s=
21
Volume: V
3 rh π= 2
Surface Area: SA 4r π=
34
Volume: V
3 r π= Rectangular Solids (Boxes)
Cubes Spheres Cylinders Pyramids (Square-based)
Cones s s s H W L 2
Surface Area (with bottom):
SArs r
ππ= +
r h r s r h s s h d 2
Surface Area (with bottom):
SA 2ds s= + 21
Volume: V
3 sh= Prisms
Volume: VBh= ⋅
h B h B Area of BaseB=
Surface Area (with top and bottom):
SA 2 (Perimeter of base)Bh= +⋅
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