For this case we have by definition, that the volume of a cone is given by:

Where:
A: It is the cone radius
h: It's the height
They tell us that the diameter is 21 m, then the radius is half the diameter, that is: 10.5m. The height is 4m. Substituting the data:
.
Finally, the volume of the cube is
ANswer:
Option B
There are 80.5 tens in 805
Answer:
If you always give without thinking of receiving something, you will get more than you need later.
-lorraine9fig
Step-by-step explanation:
Yes. I used my own quote.