Answer:
28.75 %
Explanation:
porosity is the term which is defined as the volume of voids present in the soil to the total volume of the soil.
it is denote by n where [tex] n = \dfrac{V_v}{V}[/tex]
A porous material is one which contain pores, if a material is porous it will allow the water to pass through it.
the porosity of the gravel sample is 28.75%
