The latin letter h is used in math as a variable. It appears in many geometric formulas for area and volume to represent the height of a shape.
The Area of a rectangle is given by its width multiplied by its height.
The area of a triangle is given by one half multiplied by its width and height.
The volume of a cone is given by one third multiplied by PI, the radius of its base squared, and its height.
The capital Latin letter H.