Answer:
h= 
Step-by-step explanation:
v=(
(3.141593))(r2)(2r+h)
Step 1: Flip the equation.
1.047198hr2+2.094395r3=v
Step 2: Add -2.094395r^3 to both sides.
1.047198hr2=−2.094395r3+v
Step 3: Divide both sides by 1.047198r^2.
h= 
Answer : 
Given: axis of symmetry of x = –2
To find axis of symmetry we use formula 
We check which equation has axis of symmetry x= -2
(1) 
a=1 , b=4 so axis of symmetry 
(2) 
a=1 , b=-4 so axis of symmetry 
(3) 
a=1 , b=6 so axis of symmetry 
(4) 
a=-2 , b=-8 so axis of symmetry 
(5) 
a=-2 , b=8 so axis of symmetry 
So
and
has axis of symmetry x=-2
Think it’s seven and eight and nine