v = 4π r²h is to be solved for r.
Divide both sides of this equation by 4π*h:
v
--------- = r^2
4π*h
Next, take the positive square root of both sides:
v
r = √[----------- ]
4π*h
You may leave this result as is, or proceed further: Taking the + square root of 4 results in:
v
r = (1/2)√[----------- ]
π*h
As the y intercept lies on the x-axis, x=0
To find the y-intercept, put x=0 into the equation:

Therefore,the y-intercept=9.
Hope it helps!
Answer:
18
Step-by-step explanation:
yes
Answer:
No its not a right angle.
Answer:
use area to solve it
Step-by-step explanation: