Question

mensuration important formulas ​

Answer 1

Answer:

Mensuration Formulas For 2D Shapes

Shape Area (Square units) Perimeter (units) Figure

Square a2 4a Mensuration Formula for Square

Rectangle l × b 2 ( l + b) Mensuration Formula for Rectange

Circle πr2 2 π r Mensuration Formula for Circle

Scalene Triangle √[s(s−a)(s−b)(s−c)],

Where, s = (a+b+c)/2

a+b+c Mensuration Formula for Scalene triangle

Isosceles Triangle ½ × b × h 2a + b Mensuration Formula for Isosceles triangle

(√3/4) × a2 3a Mensuration Formula for Equilateral triangle

Right Angle Triangle ½ × b × h b + hypotenuse + h Mensuration Formula for Right triangle

Rhombus ½ × d1 × d2 4 × side Mensuration Formula for Rhombus

Parallelogram b × h 2(l+b) Mensuration Formula for Parallelogram

Trapezium ½ h(a+c) a+b+c+d Mensuration Formula for Trapezium

Mensuration Formulas for 3D Shapes

Shape Volume (Cubic units) Curved Surface Area (CSA) or Lateral Surface Area (LSA) (Square units) Total Surface Area (TSA) (Square units) Figure

Cube a3 LSA = 4 a2 6 a2 Mensuration Formula for Cube

Cuboid l × b × h LSA = 2h(l + b) 2 (lb +bh +hl) Mensuration Formula for Cuboid

Sphere (4/3) π r3 4 π r2 4 π r2 Mensuration Formula for Sphere

Hemisphere (⅔) π r3 2 π r 2 3 π r 2 Mensuration Formula for Hemisphere

Cylinder π r 2 h 2π r h 2πrh + 2πr2 Mensuration Formula for Cylinder

Cone (⅓) π r2 h π r l πr (r + l) Mensuration Formula for Cone

Answer 2

Answer:

Shape Area (Square units) Perimeter (units) Figure

Square a2 4a Mensuration Formula for Square

Rectangle l × b 2 ( l + b) Mensuration Formula for Rectange

Circle πr2 2 π r Mensuration Formula for Circle

Scalene Triangle √[s(s−a)(s−b)(s−c)],

Where, s = (a+b+c)/2

a+b+c Mensuration Formula for Scalene triangle

Isosceles Triangle ½ × b × h 2a + b Mensuration Formula for Isosceles triangle

(√3/4) × a2 3a Mensuration Formula for Equilateral triangle

Right Angle Triangle ½ × b × h b + hypotenuse + h Mensuration Formula for Right triangle

Rhombus ½ × d1 × d2 4 × side Mensuration Formula for Rhombus

Parallelogram b × h 2(l+b) Mensuration Formula for Parallelogram

Trapezium ½ h(a+c) a+b+c+d Mensuration Formula for Trapezium

Step-by-step explanation:

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