Volumes Calculate Settings

Volume and Surface Area of Rectangular Frustum (Obelisk)

rectangular-frustum.png

Dimensions

Bottom base - A =   B =  
Top base - a =   b =  

Height -

 h =  

Heights of side faces

ha =  h2 + (B – b)24

hb =  h2 + (A – a)24

Volume

V = h6·(A·b + a·B + 2·(a·b + A·B))

Area of side faces

So = ha·(A + a) + hb·(B + b)

Base areas

A1 = A·B

A2 = a·b

Total surface area

S = So + A1 + A2