Answer:
The radius is 7 feet.
Step-by-step explanation:
I am assuming you meant to write <em>volume</em> of a cylinder is 2155.13 ft cubed.
The general formula for volume of a cylinder is
with r the radius, and h the height. We are given V=2155.13 ft^3, and h=2r:
The radius is 7 feet.
You have to move variables on one side and constants on the other
aby - b + b = c + b
aby = c + b
y = (c + b)/ab
Let P(x,y) be a point on the parabola. The definition of a parabola is the squared distance from P to focus F(2,2) equals the squared distance to the directrix x=8.
squared distance from P(x,y) to focus F(2,2)
(x - 2)² + (y - 2)²
squared distance from P(x,y) to the directrix x=8.
(x-8)²
Those are equal in a parabola,
(x - 2)² + (y - 2)² = (x-8)²
x² - 4x + 4 + y² - 4y + 4 = x² - 16x + 64
y² - 4y - 46 = -12x
That's a sideways parabola,
x = -(y² - 4y - 46)/12
Answer:
{(3, 5), (2, 5), (3,8)}
Step-by-step explanation:
separate the x's & y's & put them in separate brackets