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Quick Math Homework Help
SA =Surface Area equals the total area of the surface of the solid. Measured in units squared 

V =Volume equals the number of cubic units that can fit inside the solid. Measured in units cubed 

LA =Lateral area which equals the surface area minus the bases
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Surface Area Formula Chart

= apothem The distance from the center of a figure to the closest side

sl = slant height On a cone or pyramid it is the distance from the apex down the side to the edge of the base

B = Base Area the total area of the base and depends on the shape of the base.

h = height the vertical distance from the vertex of an object straight down to the base.

P = Perimeter of base the distance around the base

Lateral Area,Surface Area, and Volume Formulas

Geometry Calculatorset
List of Geometry Calculators 
to help check your work.

Formulas for Geometry


Lateral Area

Surface Area




r = radius

sl = slant height


r= radius

sl = slant height



r = radius





S =side


SA= 6s^2

s = side


V= s^3




Circumference x Height


LA + 2πr^2

r = radius

V=πr^2 h
r = radius
h=altitude height


Perimeter x height


LA + 2Base


B depends on shape

H = height


1/2P * sl


sl =slant height


LA + 1Base

LA =lateral area

V=1/3 B * h

B depends on Base


Rectangular Solid

Perimeter *height

SA=2(lw + lh + hw)


V= length x width x height

Regular Pyramid

LA = ½ P*sl

P = sum of the sides

sl =slope height

SA = ½ Psl + B

B=depends on shape

P =perimeter

sl =slope height

V = 1/3 Bh

B = depends on shape

h = height

Right Cone


LA = ½ Psl


sl = slant height

Sa =1/2 Psl + B

P = Dπ or 2πr

B = πr^2

sl =slant height

V = 1/3 Bh

B = πr^2

h =height


Right Cylinder

LA = 2πr*h


h = height

r = radius




SA = 2πr + 2πr^2

r =radius

V = Bh

B = πr^2

h =height

Right Prism

LA = Ph

P = sum of base sides

SA = Ph + 2B

P =perimeter

h =height

B =Base

V= l*w*h

B x h if it is not rectangle



SA = 4πr^2

r =radius


V= 4/3 πr^3


r =radius