In this page formulas for shapes you can find many shapes and related formulas.Mensuration is one of the branches of mathematics.This means measurement.It is is being done in our life in many situations.
For example,
A length of cloth we need for stitching, the area of a wall which is being painted, perimeter of the circular garden to be fenced. For these kind of situation we need to use one of these formulas. Here, we cover two major areas.
1. Perimeter
2. Area
Name of shape

Formulas 
Circle  
Area of circle = Π r ² Circumference of circle = 2 Π r  
Equilateral Triangle  
Area of Equilateraltriangle = (√3/4) a² Perimeter of Equilateraltriangle = 3a  
Scalene Triangle  
Area of scalene triangle = √s(sa)(sb)(sc) Perimeter of scalene triangle = a + b + c  
Semi circle  
Area of Semi circle= (1/2) Π r² Perimeter of semicircle = Πr  
Quadrant  
Area of quadrant = (1/4) Π r²  
Parallelogram  
Area of parallelogram = b x h  
Quadrilateal  
Area of quadrilateral =(1/2) x d x (h₁+h₂)  
Rectangle  
Area of rectangle = L x W Perimeter of rectangle=2(l+w)  
Square  
Area of square = a² Perimeter of square = 4a  
Rhombus  
Area of rhombus =(1/2) x (d₁ x d₂)  
Trapezoid  
Area of trapezoid =(1/2) (a + b) x h  
Sector  
Area of the sector = (θ/360) x Π r ² square units (or) Area of the sector = (1/2) x l r square units Length of arc = (θ/360) x 2Πr Examples problems on area of area of sector Examples problems on length of arc  
Path ways  
Combined Figures  
Area around circle  
Formulas for shapes would be very useful for school students who are studying lower classes. Here you can find formulas almost for all the shapes. We have also given sample problems to understand these formulas. Most of the problems in mensuration can not be done without these formulas.We have explained each topic with clear pictures. Please go through the examples to understand this topic more clearly.
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