Formula: Straight Circular Frustum Side length Height Radius of the base Radius of the upper plane
$$s ~=~ \sqrt{h^2 ~+~ (\class{red}{r_1} - \class{blue}{r_2})^2}$$
$$s ~=~ \sqrt{h^2 ~+~ (\class{red}{r_1} - \class{blue}{r_2})^2}$$
$$h ~=~ \sqrt{ s^2 ~-~ \left(\class{red}{r_1} - \class{blue}{r_2} \right)^2 }$$
Side length
$$ s $$ Unit $$ \mathrm{m} $$
Side length of a straight circular frustum (see illustration).
Height
$$ h $$ Unit $$ \mathrm{m} $$
Height of the truncated cone, i.e. the distance of the upper area from the lower area (base).
Radius of the base
$$ \class{red}{r_1} $$ Unit $$ \mathrm{m} $$
Radius of the lower circular plane.
Radius of the upper plane
$$ \class{blue}{r_2} $$ Unit $$ \mathrm{m} $$
Radius of the upper circular plane.