All formula fo mensturation

Rectangle :

• Area = lb
• Perimeter  = 2(l+b)

Square :

• Area = a×a
• Perimeter = 4a

Parallelogram

• Area = l × h
• Perimeter = 2(l+b)

Triangle :

• Area =b×h/2 or √s(s-a)(s-b)(s-c)…………….where s=a+b+c/2

Right angle Triangle :

• Area =1/2(bh)
• Perimeter = b+h+d

Isosceles right angle triangle :

• Area = ½. a²
• Perimeter = 2a+d……………………….where d=a√2

Equilateral Triangle :

• Area = √3. a²/4 or  ½(ah)….where h = √3/2
• Perimeter = 3a

Trapezium :

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

Rhombus :

• Area = d1 × d2/2
• Perimeter = 4l

Quadrilateral

• Area =1/2 × Diagonal × (Sum of offsets)

Kite :

• Area  = d1×d2/2
• Perimeter  = 2 × Sum on non-adjacent sides

Circle :

• Area =  πr^2 or πd^2/4
• Circumference = 2πr  or πd
• Area of sector of a circle = (θπr^2 )/360

Frustum :

• Curved surface area = πh(r₁+r₂)
• Surface area = π( r₁²+ h(r₁+r₂) + r₂²)

Cube :

• Volume: V = l³
• Lateral surface area = 4a²
• Surface Area: S = 6s²
• Diagonal (d) = √3l

Cuboid :

• Volume of cuboid: lbh
• Total surface area = 2 (lb + bh + hl) or 6l²
• Length of diagonal =√(l^2+b^2+h^2)

Right Circular Cylinder :

• Volume of Cylinder = π r² h
• Lateral Surface Area (LSA or CSA) = 2π r h
• Total Surface Area = TSA = 2 π r (r + h)
• Volume of hollow cylinder = π r h(R² – r²)

Right Circular cone :

• Volume = 1/3 π r²h
• Curved surface area: CSA=  π r l
• Total surface area = TSA = πr(r + l )

Sphere

• Volume: V = 4/3 πr³
• Surface Area: S = 4πr²

Hemisphere :

• Volume = 2/3 π r³
• Curved surface area(CSA) = 2 π r²
• Total surface area = TSA = 3 π r²