I don’t really understand the question
Answer:
a) The line intersects with the circle once.
b) Tangent
Step-by-step explanation:
We are given the following equation for the circle:

How many times does the line y=-6 intersect with the circle?
We have to find the values of x when 
So





Since the line intersects the circle at one point, it is tangent to the circle.
The line intersects with the circle once.
Answer:
3.04 units
Step-by-step explanation:
h = volume / (3.14 x r^2)
86 / (3.14 x 3^3) = 3.04 units