Answer:
 The  volume of the cone is  100.48 units³ approximately
Step-by-step explanation:
To find the volume of a cone with a diameter of 8 unit   and height of 6 units, we will follow the steps below;
first, write down the formula for calculating the volume of a cone
v= πr²
where v is the volume of the cone
r is the radius    and h is the height of the cone
from the question given, diameter d = 8 units  but d=2r    which implies  r=d/2
r=8/2 = 4 units
Hence r= 4 units
height = 6 units
π is a constant and is ≈ 3.14
we can now proceed to insert the values into the formula
v= πr²
v ≈ 3.14 × 4² × 6/3
v  ≈ 3.14 × 16 × 2
v ≈ 100 .48 units³
Therefore the  volume of the cone is  100 .48 units³ approximately