Question

Question- Please provide all formulas used in chapter- Mensuration.


Class - 8th
Maths NCERT ​

Answer 1

Step-by-step explanation:

Area of Trapezium height x (sum of parallel sides)/2

Area of Rhombus ½ x d1 x d2

Area of Special Quadrilateral ½ x d x (h1 + h2)

Surface area of Cuboid 2(lb x bh x hl)

Surface area of Cube 6a2

Surface area of cylinder 2πr(r + h)

Volume of Cuboid l × b × h

Volume of Cube a3

Volume of cylinder πr2h

Answer 2

Answer:

Cuboid :

(I) Volume of cuboid : (L*B*H)

(II) Diagonal of cuboid :√l^2+b^2+h^2

(III) Total Surface area of cuboid :2(lb+bh+hl)

(iv) Lateral surface area of cuboid :[2(l+b)*h]

(v) Area of four walls of room :[2(l+b)*h]

Cube:

(I) volume of cube : a^3

(II) Diagonal of cube :√3a

(III) Total surface area of cube : 6a^2

(iv) Lateral surface area of cube : 4a^2