density = mass/volume
Regular shapes have equal sides and angles, like squares and equilateral triangles. Irregular shapes have sides and angles of varying lengths and measurements, like rectangles and scalene triangles. Regular shapes are typically easier to calculate and work with compared to irregular shapes.
The answer will depend on what the surface area is of. The surface areas of regular shapes are can be calculated from formulae but these will depend on the shapes. For non-regular areas there may or may not be simple formulae.
Calculate its volumemeasure its mass through a suitable balancedivide the mass by the volume to get its density
For regular shapes, you simply add the sides together, for circle, is pi x diameter.
boogers
Regular shapes are both equilateral and equiangular. Irregular shapes may or may not be equilateral and equiangular.
boogers
How can you calculate surface density if the volume density is 1.4 g/cm3
If its a simple shape you can take measurements with a ruler, calipers or tape measure and calculate it. For simple as well as more complex shapes, if you know the material it is made from, you can work out the volume by taking the mass of the object and dividing by the density of the material, since; density = mass/volume If you don't know the density, then you can work out the volume by submerging the object in water, and measuring the volume of water that is displaced.
You will need to divide it up into regular shapes whose areas you can calculate using formulae. Triangles are easiest.
You cannot. Diameter and length can, for some particular shapes, give you the volume. But that will not give you the mass unless you know the density of the substance.
how do you calculate density