How big is 4.4 x 3.5 mass?

To find the mass of an object, you need to know the density of the material and its volume. However, the dimensions given (4.4 x 3.5) seem to refer to measurements rather than mass. If these measurements represent length and width, you would need a third dimension (height) to calculate volume, and subsequently, mass if density is provided. Without additional information, it's not possible to determine the mass.