# Important Formulas Mensuration Pdf Download SSC CGL,SSC CPO,IBPS

**Important Formulas Mensuration Pdf Download SSC CGL,SSC CPO,IBPS** – Hello Friends Welcome to Studydhaba.com .

Here we are providing you Some important formulas which is used in mensuration which are useful in SSC, Railways and other exams.

**Important Formulas Mensuration Pdf Download SSC CGL,SSC CPO,IBPS**

**Rectangle :Important FormulasÂ **

- Area = lb
- PerimeterÂ = 2(l+b)

**Square :important Formulas**

- Area = aÃ—a
- Perimeter = 4a

**Parallelogram – Important Formulas**

- Area = l Ã— h
- Perimeter = 2(l+b)

**Triangle :Important Formulas**

- Area =bÃ—h/2 or âˆšs(s-a)(s-b)(s-c)â€¦â€¦â€¦â€¦â€¦.where s=a+b+c/2

**Right angle Triangle :Important Formulas**

- Area =1/2(bh)
- Perimeter = b+h+d

**Isosceles right angle triangle :**

- Area = Â½. a
^{2} - Perimeter = 2a+dâ€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦â€¦.where d=aâˆš2

**Equilateral Triangle :**

- Area = âˆš3. a
^{2}/4 or Â Â½(ah)â€¦.where h = âˆš3/2 - Perimeter = 3a

**Trapezium :**

- Area = 1/2h(a+b)
- Perimeter = Sum of all sides

**Rhombus :**

- Area = d1 Ã— d2/2
- Perimeter = 4l

**Quadrilateral**

- Area =1/2 Ã— Diagonal Ã— (Sum of offsets)

**Kite :**

- Area Â = d1Ã—d2/2
- Perimeter Â = 2 Ã— Sum on non-adjacent sides

**Circle :**

- Area = Â Ï€r^2 or Ï€d^2/4
- Circumference =Â 2Ï€r Â or Ï€d
- Area of sector of a circle = (Î¸Ï€r^2 )/360

**Frustum :**

- Curved surface area = Ï€h(r
_{1}+r_{2}) - Surface areaÂ = Ï€( r
_{1}^{2}+ h(r_{1}+r_{2}) + r_{2}^{2})

**Cube :**

- Volume: V = l
^{3} - Lateral surface area = 4a
^{2} - Surface Area: S = 6s
^{2} - Diagonal (d) = âˆš3l

**Cuboid :**

- Volume of cuboid: lbh
- Total surface area = 2 (lb + bh + hl) or 6l
^{2} - Length of diagonal =âˆš(l^2+b^2+h^2)

**Right Circular Cylinder :**

- Volume of Cylinder = Ï€ r
^{2}h - Lateral Surface Area (LSA or CSA) = 2Ï€ r h
- Total Surface Area = TSA = 2 Ï€ r (r + h)
- Volume of hollow cylinder = Ï€ r h(R
^{2}â€“ r^{2})

**Right Circular cone :**

- Volume = 1/3 Ï€ r
^{2}h - Curved surface area: CSA= Â Ï€ r l
- Total surface area = TSA = Ï€r(r + l )

**Sphere**

- Volume: V = 4/3 Ï€r
^{3} - Surface Area: S = 4Ï€r
^{2}

**Hemisphere :**

- Volume = 2/3 Ï€ r
^{3} - Curved surface area(CSA) = 2 Ï€ r
^{2} - Total surface area = TSA = 3 Ï€ r
^{2}

**Prism :**

- Volume = Base area x h
- Lateral Surface area = perimeter of the base x h

**Pyramid:**

- Volume of a right pyramid = (1/3) Ã— area of the base Ã— height.
- Area of the lateral faces of a right pyramid = (1/2) Ã— perimeter of the base x slant height.
- Area of whole surface of a right pyramid = area of the lateral faces + area of the base.

**Tetrahedron :**

- Area of its slant sides =Â 3a
^{2}âˆš3/4 - Area of its whole surface = âˆš3a
^{2}Â - Volume of the tetrahedron =Â 12âˆš2

**Regular Hexagon :**

- Area =Â 3âˆš3 a
^{2}/ 2 - PerimeterÂ = 6a

**Some other Formula :**

- Area of Pathway running across the middle ofÂ a rectangle = w(l+b-w)
- Perimeter of Pathway around a rectangle field = 2(l+b+4w)
- Area of Pathway around a rectangle field =2w(l+b+2w)
- Perimeter of Pathway inside a rectangle field =2(l+b-4w)
- Area of Pathway inside a rectangle field =2w(l+b-2w)

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