def METHOD_NAME(height, diameter):
    r"""
    Calculates volume and total surface of a hot water storage.
    .. calculate_storage_dimensions-equations:
    :math:`V = \pi \frac{d^2}{4} \cdot h`
    :math:`A = \pi d h + \pi \frac{d^2}{2}`
    Parameters
    ----------
    height : numeric
        Height of the storage [m]
    diameter : numeric
        Diameter of the storage [m]
    Returns
    -------
    volume : numeric
        Volume of storage
    surface : numeric
        Total surface of storage [m2]
    """
    volume = 0.25 * np.pi * diameter ** 2 * height
    surface = np.pi * diameter * height + 0.5 * np.pi * diameter ** 2
    return volume, surface