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Area Formula =
Shape
Area formulas chart
d1
d2
s
a
b
c
h
A =bh
A= 1/2d1d2
A=
s
s
s
A =bh
Use when you know the height, use above
Click on any shape in order to go to a video and more information on the shape
When height is unknown, use above
Circle
Parallelogram
Rhombus
Rectangle
Sector Arc
Square
Trapezoid
Triangle
Equilateral Triangle
Area and Perimeter Formulas
Circumference = 2πr
Perimeter =2(b+s)
Perimeter =4s
Perimeter =4s
Perimeter =2(b+h)
Perimeter =b1 +b2 + s1 +s2
Perimeter formula = a + b + c
Perimeter =3s
How to find the area of shapes.
Area Formulas Chart and Infographic
Area is the space covered in a flat, 2-dimensional plane inside a bounded region. Think of area in terms of painting a wall. The area of plane shapes is the amount of units squared that can fit inside the shape. It is measured in units squared.
When finding the area of plane figures you need specific measures. One of the greatest lessons for students is deciding what information they have given and which formula they need to use to find the area of the plane figures. Below are multiple plane figures and the formula(s) needed to find areas.
Area can also be found on a coordinate plane using order pairs to find necessary dimensions.
You can access videos and informational pages for each of the plane figures above by clicking on each shape. Good luck!
Common Core Standard 6.G.1 , 7.G.6 6th Grade Math, 7th Grade Math