# Mensuration

by
**faris786**

Last updated 2 years ago

** Discipline: **

Math ** Subject: **

Measurement
** Grade:**

8

Triangle

MENSURATION

Quadrilateral-A four sided figure

Planning the construction of a house. build a fence to keep you cows in. build a track around a football field

Circle-A round plain figure whose boundary consists of points that meet at the center

Circle

Perimeter

AREA

Quadrilateral

Triangle -A 3 sided figure

1.Circle2.Semi circle

a.ParallelogramP=2(a+b) A=bXhb.SquareP=4 X side A=side X sidec.RectangleP=2(l X b) A= l X bd.RhombusP=4 X side A=PQ/2e.TrapeziumP=a+b+c+d A=1/2(a+b)hf.KiteP=2(a+b) A+PQ/2

1.Equilateral2.Isoscles3.Scalene4.Acute5.Right6.Obtuse

1.Parallelogram2.Square3.Rectangle4.Rhombus5.Trapezium6.Kite

a.EquilateralP=3 X side A=√3/4 X a2b.IsoclesP=2a+b A=Heron's formulac.ScaleneP=a=b+c A= Heron's Formulad.AcuteP=a+b+c A=e.RightP=a+b+c or pythagoras theorem A=a+b/2f.ObtuseP=a+b+bc A=Heron's formula

Quadrilateral

a.CircleP=2πr A=πr2b.Semi CircleP= 1/2 π × d A=1/2 πr2

Triangle

Circle

HERON'S FORMULA

EXAMPLES IN DAILY LIFE

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