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Formulas for calculating the perimeter and area of various geometric figures including triangles, trapezoids, parallelograms, circles, rectangles, and more. It also includes formulas for the volume and surface area of cylinders, spheres, cones, and other shapes.
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Triangle
Trapezoid
Parallelogram
Circle
Rectangle
Geometric Figure Perimeter Area
w
l
P = l + l + w + w
or
P = 2 (l + w)
A = lw
P = b + b + c + c
or
P = 2 (b + c)
P = a + b + c
P = a + b + c + d
C = π d
or
C = 2π r
A = bh
A = π r
2
or
h or
b
a c
bh
A = bh 2
A = ( a + b ) h 2
d
r
h
b
c
b
c d
a
h
( a + b ) h A =
Ffla2_9e_
A (^) = 4πr
2
Abase = πr
2
Atotal = Alateral surface + Abase
Atotal = πrs + πr
2
Abase = b
2
Atotal = 4Atriangle + Abase
Atotal = 2bs + b
2
A (^) = 2(wh + lw + lh)
Arectangles = ah + bh + ch
Atotal = ah + bh + ch + bl
or
V = πr
2 h
V = (Abase )(height)
V = (Abase )(height)
V = (Abase )(height)
V = lwh
Abase = bl
(Abase )(height)
or
Geometric Figure Surface Area Volume
Alateral surface = 2 πrh
Atotal = 2 Abase + Alateral surface
Abase = πr
2
Alateral surface = πrs
= 2 πr
2
Atriangle = bs 2
Atotal = Arectangles + 2 Abase
V = πr
3
3
4 πr
3
V = πr
2 h 3
πr
2 h
V = b^ or
2 h 3
V = blh 2
b
2 h
or V = 2
blh
Cylinder
Sphere
Cone
Rectangular prism
Square-
based
pyramid
Triangular prism
r
r
h
l
h
w
b
l
h
s
s
b
b
h
h
r
c a
(Abase )(height)
Ffla2_9e_
