Quantity is areal density times volume
======================================

An extensive quantity of interest can be obtained by multiplying the corresponding *areal
density* by area.

.. py:currentmodule:: symplyphysics.laws.quantities.quantity_is_areal_density_times_area

.. py:data:: extensive_quantity

    Extensive quantity. See :attr:`~symplyphysics.symbols.basic.any_quantity`.

Symbol:
    :code:`X`

Latex:
    :math:`X`

Dimension:
    :code:`any_dimension`


.. py:data:: areal_density

    Intensive area-specific density, which has the dimension of :attr:`~extensive_quantity`
    divided by :attr:`~area`. See :attr:`~symplyphysics.symbols.basic.any_quantity`.

Symbol:
    :code:`sigma_X`

Latex:
    :math:`\sigma_{X}`

Dimension:
    :code:`any_dimension`


.. py:data:: area

    :attr:`~symplyphysics.symbols.classical_mechanics.area`.

Symbol:
    :code:`A`

Latex:
    :math:`A`

Dimension:
    :code:`area`


.. py:data:: law

    :code:`X = sigma_X * A`


    Latex:
        .. math::
            X = \sigma_{X} A