# Mensuration chapter all Formulas class 9

Hey! Friends there are all important formula of mensuration class 9 is listed 👇 below.

Mensuration chapter all Formulas class 9 will help you a lot in solving the problem of Mensuration chapter.

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CUBOID

=2(lb+bh+hl)
Where,
l=length
h=height

=2h(l+b)
Where,
l=length
h=height

=lbh

Where,
l=length
h=height

√( l2 + b2 +h2)
Where,
l=length
h=height

=12a
Where,
a=side

# CUBE

#### Total surface area of Cube

=6a2 (6*side square)

#### Area of 4 wall/Lateral surface area of cube

=4a2(4*side square)

=a^3(side cube)

=✓3a

=4(l+b+h)
Where,
l=length
h=height

=2πrh
Where,
h=height

=2πr(h+r)
Where,
h=height

Where,
h=height

=π(R^2-r^2)h
Where,
h=height

# CONE

Cone Shape
Cone Diagram with h = height and r = radius and s = slant height

h = height
s = slant height
V = volume
L = lateral surface area
B = base surface area
A = total surface area
π = pi = 3.1415926535898
√ = square root

V = (1/3)πr2h

s = √(r2 + h2)

#### Lateral surface area of a cone:

L = πrs = πr√(r2 + h2)

B = πr2

#### Total surface area of a cone:

A = L + B = πrs + πr2 = πr(s + r) = πr(r + √(r2 + h2)