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Rectangle
Area = Length X Width
A = lw

Perimeter = 2 X Lengths + 2 X
Widths
P = 2(l + w)
area of a rectangle
area of a parallelogram
Parallelogram
Area = Base X Height
a = bh
Triangle
Area = 1/2 of the base X the height
a = 1/2 bh
Perimeter = a + b + c
(add the length of the three sides)
formula for triangle
tapezoid formula
Trapezoid

Perimeter = area + b1 + b2 + c
P = a + b1 + b2 + c
parts of a circle
The distance around the circle is a circumference. The
distance across the circle is the diameter (d). The radius
(r) is the distance from the center to a point on the circle.
(Pi = 3.14)
d = 2r
c = 2x pi x r
A = pr
rectangular solid
Rectangular Solid( Rectangular prism)
Volume = Length X Width X Height
V = lwh
Surface area = 2lw + 2lh + 2wh
prisms
Prisms
Volume = Base X Height
v=bh
Surface = 2b + Ph (b is the
area of the base P is the
perimeter of the base)
cylinder formula
Surface area
formula for pyramid
Pyramid
V = 1/3 bh (1/3 x area of the base x height

b is the area of the base
Surface Area: Add the area of the base to the
sum of the areas of all of the triangular faces.
The areas of the triangular faces will have
different formulas for different shaped base
s.
formula of a cone
Cones
Volume = 1/3 pr2 x height
V= 1/3 pr2h
Surface = pr2 + prs
S = pr2 + prs
=pr2 + pr
formula for sphere
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Math Formulas
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Subjects
Formulas for Measurement
Circle
Video
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Videos
Video
Video Rectangular prism
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Video
Cylinder
pi x square of the radius x height
2

Videos
volume of a sphere formula
surface area of a sphere
Sphere
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