Maths query side menu
As an Amazon Associate we earn from qualifying purchases.

List of Area and Perimeter Formulas of 2D Shapes

Important area formulas of 2D shapes

2D shapeArea
Rectanglel × b
Squarea × a = a2
Parallelogramb × h
Rhombus b × h
or 1 2 × d 1 × d 2
Trapezium 1 2 ( a + b ) × h
Triangle 1 2 × b × h
Isosceles triangle b a 2 b 2 4
Equilateral triangle 3 4 a 2
Circleπr2

Perimeter formulas of 2D shapes

2D shapePerimeter
Rectangle2(l + b)
Square4a
Parallelogram2(a + b)
Rhombus 4a
or 2 d 1 2 + d 2 2
Trapeziuma + b + c + d
Trianglea + b + c
Isosceles triangle2a + b
Equilateral triangle3a
CircleCircumference = 2πr
Last updated on: 13-02-2025

Search Maths books by grade

Maths units list

Search Maths chapters by topic