Test scores: Scores on a statistics exam had a mean of 75 with a standard deviation of 5. Scores on a calculus exam had a mean o
1 answer:
You might be interested in
Answer:
Step-by-step explanation:
we know that
If the tank half-filled with water is at 20 feet, then the height of the tank is 40 feet
The volume of the cylindrical tank is equal to
we have
assume
substitute and solve for r
Find the diameter
Remember that the diameter is two times the radius
It is given in the question that the formula of volume of cone is
Where V is the volume, r is the radius and h is the height.
And we have to find an expression for h.
First we multiply both sides by 3, and on doing that we will get
Now to isolate h, we have to get rid of pi r square by dividing.
Therefore the correct option is B.