Depends on the material
Area of any circle = pi*radius squared
If one side of the triangle is 8cm then the other side is 7cm because 0.5*8*7 = 28 square cm
density = mass/volume = 50g/8cm^3 = 6.25 g/cm^3
That would depend on its radius which has not been given but the area of a circle is pi times radius squared
8cm is about 3 inches
A cube has be definition has slides all of the same length, which in turn means all six faces are squares, in this case 8cm along each side. Once side would have an area of 8cm x 8cm which is 64 cm squared but you have six of them 6 x 64 cm squared is 384 cm squared
598 cm squared
Area of any circle = pi*radius squared
8 x 8 = 64cm squared
If one side of the triangle is 8cm then the other side is 7cm because 0.5*8*7 = 28 square cm
Density = mass/volume = 4g/8cm3 = 0.5g/cm3
Mass squared (mass*mass)
2.56
density = mass/volume = 50g/8cm^3 = 6.25 g/cm^3
That would depend on its radius which has not been given but the area of a circle is pi times radius squared
The density of an object with a mass of 16 g and volume of 8 cm^3 would be 2 g/cm^3.
It stands for Energy=mass times the speed of light squared