Question

Formula of mensuration​

Answer 1

Answer

》》》Mensuration Formulas. Area of rectangle (A) is equal to length(l) × Breath(b) Perimeter of a rectangle (P) is equal to 2 × (Length(l) + Breath(b)) Area of a square (A) is equal to Length (l) × Length (l) Perimeter of a square (P) is equal to 4 × Length (l).

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Answer 2

Answer:

Square a2 4a  

Rectangle l × b 2 ( l + b)  

Circle πr2 2 π r  

Scalene Triangle √[s(s−a)(s−b)(s−c)],

Where, s = (a+b+c)/2 a+b+c  

Isosceles Triangle ½ × b × h 2a + b  

Equilateral triangle (√3/4) × a2 3a  

Right Angle Triangle ½ × b × h b + hypotenuse + h  

Rhombus ½ × d1 × d2 4 × side  

Parallelogram b × h 2(l+b)  

Trapezium ½ h(a+c) a+b+c+d

Cube a3 LSA = 4 a2 6 a2  

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

Sphere (4/3) π r3 4 π r2 4 π r2  

Hemisphere (⅔) π r3 2 π r 2 3 π r 2  

Cylinder π r 2 h 2π r h 2πrh + 2πr2  

Cone (⅓) π r2 h π r l πr (r + l)